9-3x=x-7

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


Simplifying
9 + -3x = x + -7

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

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

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

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

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

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

Combine like terms: -7 + -9 = -16
-4x = -16

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

Simplifying
x = 4

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