7-3x=x+9

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


Simplifying
7 + -3x = x + 9

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

Solving
7 + -3x = 9 + x

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.
7 + -3x + -1x = 9 + x + -1x

Combine like terms: -3x + -1x = -4x
7 + -4x = 9 + x + -1x

Combine like terms: x + -1x = 0
7 + -4x = 9 + 0
7 + -4x = 9

Add '-7' to each side of the equation.
7 + -7 + -4x = 9 + -7

Combine like terms: 7 + -7 = 0
0 + -4x = 9 + -7
-4x = 9 + -7

Combine like terms: 9 + -7 = 2
-4x = 2

Divide each side by '-4'.
x = -0.5

Simplifying
x = -0.5

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