7x+9=x-3y

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Solution for 7x+9=x-3y equation:


Simplifying
7x + 9 = x + -3y

Reorder the terms:
9 + 7x = x + -3y

Solving
9 + 7x = x + -3y

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
9 + 7x + -1x = x + -1x + -3y

Combine like terms: 7x + -1x = 6x
9 + 6x = x + -1x + -3y

Combine like terms: x + -1x = 0
9 + 6x = 0 + -3y
9 + 6x = -3y

Add '-9' to each side of the equation.
9 + -9 + 6x = -9 + -3y

Combine like terms: 9 + -9 = 0
0 + 6x = -9 + -3y
6x = -9 + -3y

Divide each side by '6'.
x = -1.5 + -0.5y

Simplifying
x = -1.5 + -0.5y

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