Respuesta :

Since it gives you the y then you just plug it in, so the equation would be 5x+2(3x-7)=8.
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1. 5x+2y= 8
Correct answer: -2/5y + 8/5

Add -2y to both sides.
5x+ 2y +-2y = 8+ -2y
5x = -2y + 8

Divide both sides by 5
5x/5 = -2y +8/5

2. Y=3x - 7
Correct answer: 1/3y+ 7/3

Flip the equation

3x- 7=y
Add both sides by 7
3x -7 +7 =y+7
3x = y+7

Divide both sides by 3

3x/3= y+7/3

Hope I get brainlist this took a while.
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