12-5x=4x-15

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Solution for 12-5x=4x-15 equation:


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

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

Solving
12 + -5x = -15 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
12 + -5x + -4x = -15 + 4x + -4x

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

Combine like terms: 4x + -4x = 0
12 + -9x = -15 + 0
12 + -9x = -15

Add '-12' to each side of the equation.
12 + -12 + -9x = -15 + -12

Combine like terms: 12 + -12 = 0
0 + -9x = -15 + -12
-9x = -15 + -12

Combine like terms: -15 + -12 = -27
-9x = -27

Divide each side by '-9'.
x = 3

Simplifying
x = 3

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