2x-y=7x+9

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Solution for 2x-y=7x+9 equation:


Simplifying
2x + -1y = 7x + 9

Reorder the terms:
2x + -1y = 9 + 7x

Solving
2x + -1y = 9 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
2x + -7x + -1y = 9 + 7x + -7x

Combine like terms: 2x + -7x = -5x
-5x + -1y = 9 + 7x + -7x

Combine like terms: 7x + -7x = 0
-5x + -1y = 9 + 0
-5x + -1y = 9

Add 'y' to each side of the equation.
-5x + -1y + y = 9 + y

Combine like terms: -1y + y = 0
-5x + 0 = 9 + y
-5x = 9 + y

Divide each side by '-5'.
x = -1.8 + -0.2y

Simplifying
x = -1.8 + -0.2y

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