Makakuha ng mabilis at tumpak na mga sagot sa iyong mga katanungan sa Imhr.ca, ang pinakamahusay na Q&A platform. Sumali sa aming platform upang makakuha ng mapagkakatiwalaang sagot sa iyong mga tanong mula sa isang malawak na komunidad ng mga eksperto. Tuklasin ang detalyadong mga sagot sa iyong mga tanong mula sa isang malawak na network ng mga eksperto sa aming komprehensibong Q&A platform.
Sagot :
[tex]\begin{cases}2x+5y=\frac{4}{5} \\ 6x-5y=\frac{5}{6} \end{cases}\\\\\begin{cases} 5y=-2x+\frac{4}{5} \ \ / *\frac{1}{5} \\ 6x-5y=\frac{5}{6} \end{cases}\\\\\begin{cases} y=-\frac{2}{5}x+4 \\ 6x-5y=\frac{5}{6} \end{cases}[/tex]
[tex]substitution : \\\\ 6x-5 *(-\frac{2}{5}x+\frac{4}{25})=\frac{5}{6}\\\\6x+2x- \frac{4}{5}=\frac{5}{6} \\\\8x=\frac{5}{6} +\frac{4}{5}\\\\8x=\frac{25}{30}+\frac{24}{30}[/tex]
[tex]8x=\frac{49}{30} \ \ /*\frac{1}{8}\\\\x=\frac{49}{240}\\\\\\2*\frac{49}{240}+5y=\frac{4}{5}\\\\\frac{49}{120}+5y=\frac{4}{5}[/tex]
[tex]5y=\frac{4}{5}-\frac{49}{120} \\\\5y=\frac{96}{120}-\frac{49}{120} \\\\5y=\frac{47}{120}\ \ /*\frac{1}{5}\\\\y=\frac{47}{600} \\\\Answer : \ \begin{cases} x= \frac{49}{240}\\ y=\frac{47}{600} \end{cases}[/tex]
[tex]substitution : \\\\ 6x-5 *(-\frac{2}{5}x+\frac{4}{25})=\frac{5}{6}\\\\6x+2x- \frac{4}{5}=\frac{5}{6} \\\\8x=\frac{5}{6} +\frac{4}{5}\\\\8x=\frac{25}{30}+\frac{24}{30}[/tex]
[tex]8x=\frac{49}{30} \ \ /*\frac{1}{8}\\\\x=\frac{49}{240}\\\\\\2*\frac{49}{240}+5y=\frac{4}{5}\\\\\frac{49}{120}+5y=\frac{4}{5}[/tex]
[tex]5y=\frac{4}{5}-\frac{49}{120} \\\\5y=\frac{96}{120}-\frac{49}{120} \\\\5y=\frac{47}{120}\ \ /*\frac{1}{5}\\\\y=\frac{47}{600} \\\\Answer : \ \begin{cases} x= \frac{49}{240}\\ y=\frac{47}{600} \end{cases}[/tex]
2x + 5y = 4/5 ---- equation 1
6x - 5y =5/6 ----equation 2
since you are to use substitution method then first thing to do is to have one equation be modified such that one variable could have a value in terms of the other..
Let's have equation 1
2x + 5y = 4/5
2x = 4/5 - 5y
[tex]x = ( \frac{4}{5} - 5y)( \frac{1}{2}) [/tex]
[tex]x = (\frac{4}{5} )( \frac{1}{2} ) - \frac{5y}{2} [/tex]
[tex]x = \frac{2}{5} - \frac{5y}{2} [/tex]
substituting this to equation 2 you'll have:
6x - 5y = 5/6
[tex]6( \frac{2}{5} - \frac{5y}{2}) - 5y = \frac{5}{6} [/tex]
[tex]6( \frac{2}{5}) - \frac{6(5y)}{2} - 5y = \frac{5}{6} [/tex]
[tex] \frac{12}{5} - 15y - 5y = \frac{5}{6} [/tex]
[tex] \frac{12}{5} - \frac{5}{6} = 15y + 5y [/tex]
[tex]20y = \frac{12}{5} - \frac{5}{6} [/tex]
[tex]20y = \frac{12(6)-5(5)}{30} [/tex]
[tex]20y = \frac{71-25}{30} [/tex]
[tex]20y = \frac{47}{30} [/tex]
[tex]y = \frac{47}{30(20)} [/tex]
[tex]y = \frac{47}{600} [/tex]
substituting the value for y to equation 1
2x + 5y = 4/5
2x + 5(47/600) = 4/5
[tex]2x = \frac{4}{5} - \frac{5(47)}{600} [/tex]
[tex]2x = \frac{4}{5} - \frac{47}{120} [/tex]
[tex]2x = \frac{49}{120} [/tex]
[tex]x = \frac{49}{240} [/tex]
6x - 5y =5/6 ----equation 2
since you are to use substitution method then first thing to do is to have one equation be modified such that one variable could have a value in terms of the other..
Let's have equation 1
2x + 5y = 4/5
2x = 4/5 - 5y
[tex]x = ( \frac{4}{5} - 5y)( \frac{1}{2}) [/tex]
[tex]x = (\frac{4}{5} )( \frac{1}{2} ) - \frac{5y}{2} [/tex]
[tex]x = \frac{2}{5} - \frac{5y}{2} [/tex]
substituting this to equation 2 you'll have:
6x - 5y = 5/6
[tex]6( \frac{2}{5} - \frac{5y}{2}) - 5y = \frac{5}{6} [/tex]
[tex]6( \frac{2}{5}) - \frac{6(5y)}{2} - 5y = \frac{5}{6} [/tex]
[tex] \frac{12}{5} - 15y - 5y = \frac{5}{6} [/tex]
[tex] \frac{12}{5} - \frac{5}{6} = 15y + 5y [/tex]
[tex]20y = \frac{12}{5} - \frac{5}{6} [/tex]
[tex]20y = \frac{12(6)-5(5)}{30} [/tex]
[tex]20y = \frac{71-25}{30} [/tex]
[tex]20y = \frac{47}{30} [/tex]
[tex]y = \frac{47}{30(20)} [/tex]
[tex]y = \frac{47}{600} [/tex]
substituting the value for y to equation 1
2x + 5y = 4/5
2x + 5(47/600) = 4/5
[tex]2x = \frac{4}{5} - \frac{5(47)}{600} [/tex]
[tex]2x = \frac{4}{5} - \frac{47}{120} [/tex]
[tex]2x = \frac{49}{120} [/tex]
[tex]x = \frac{49}{240} [/tex]
Salamat sa pagtitiwala sa amin sa iyong mga katanungan. Narito kami upang tulungan kang makahanap ng tumpak na mga sagot nang mabilis at mahusay. Salamat sa pagpunta. Nagsusumikap kaming magbigay ng pinakamahusay na mga sagot para sa lahat ng iyong mga katanungan. Kita tayo muli sa susunod. Mahalaga ang iyong kaalaman. Bumalik sa Imhr.ca para sa higit pang mga sagot at impormasyon.