4x-12+9x=5x-15-13

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Solution for 4x-12+9x=5x-15-13 equation:


Simplifying
4x + -12 + 9x = 5x + -15 + -13

Reorder the terms:
-12 + 4x + 9x = 5x + -15 + -13

Combine like terms: 4x + 9x = 13x
-12 + 13x = 5x + -15 + -13

Reorder the terms:
-12 + 13x = -15 + -13 + 5x

Combine like terms: -15 + -13 = -28
-12 + 13x = -28 + 5x

Solving
-12 + 13x = -28 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
-12 + 13x + -5x = -28 + 5x + -5x

Combine like terms: 13x + -5x = 8x
-12 + 8x = -28 + 5x + -5x

Combine like terms: 5x + -5x = 0
-12 + 8x = -28 + 0
-12 + 8x = -28

Add '12' to each side of the equation.
-12 + 12 + 8x = -28 + 12

Combine like terms: -12 + 12 = 0
0 + 8x = -28 + 12
8x = -28 + 12

Combine like terms: -28 + 12 = -16
8x = -16

Divide each side by '8'.
x = -2

Simplifying
x = -2

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