Respuesta :

Simplifying
2x + y = 3x + -7

Reorder the terms:
2x + y = -7 + 3x

Solving
2x + y = -7 + 3x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-3x' to each side of the equation.
2x + -3x + y = -7 + 3x + -3x

Combine like terms: 2x + -3x = -1x
-1x + y = -7 + 3x + -3x

Combine like terms: 3x + -3x = 0
-1x + y = -7 + 0
-1x + y = -7

Add '-1y' to each side of the equation.
-1x + y + -1y = -7 + -1y

Combine like terms: y + -1y = 0
-1x + 0 = -7 + -1y
-1x = -7 + -1y

Divide each side by '-1'.
x = 7 + y

Simplifying
x = 7 + y