Question

6y-4x=32                                                                                                                       

-y+x=-7

Answer 1

6y-4x=32 -y+x=-7
6y-4x=32
-y+x=-7

6y - 4x = 32
-y + x = -7
-y = -x - 7
y = x + 7

6y - 4x = 32
6(x + 7) - 4x = 32
6x + 42 - 4x = 32
2x + 42 = 32
2x = 32 - 42
2x = -10
x = -5    <<<<<<<<<<<<<<<

y = x + 7
y = -5 + 7
y = 2    <<<<<<<<<<<<<<<

Answer 2

Given 6y-4x=32
-y+x=-7

From equation (2)
x = -7 +y

Substitute in equation (1)
6y-4(y-7)=32
6y-4y+28=32
2y=32-28
2y=4
y=2

Free Algebra Tutoring