How do you solve the system of equations $x+ 4y = 5$ and $5x + 3y = 8$ by addition method?

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How do you solve the system of equations $x+ 4y = 5$ and $5x + 3y = 8$ by addition method?

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Answer 1 · 2017-06-23T18:18:49

I got $x=1$ and $y=1$

Explanation:

Let us multiply the first quation by $-5$
$color(red)(-5x-20y=-25)$
$5x+3y=8$
we can add them together (in columns) to get:
$0-17y=-17$
so that we get:
$y=-17/-17=1$
that substituted into the first original equation gives:
$x+4*1=5$
$x=5-4=1$

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How do you solve the system of equations $x+ 4y = 5$ and $5x + 3y = 8$ by addition method?

1 Answer

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How do you solve the system of equations x+ 4y = 5x+ 4y = 5 and 5x + 3y = 85x + 3y = 8 by addition method?

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How do you solve the system of equations $x+ 4y = 5$ and $5x + 3y = 8$ by addition method?