87-4x+12=x+15

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Solution for 87-4x+12=x+15 equation:


Simplifying
87 + -4x + 12 = x + 15

Reorder the terms:
87 + 12 + -4x = x + 15

Combine like terms: 87 + 12 = 99
99 + -4x = x + 15

Reorder the terms:
99 + -4x = 15 + x

Solving
99 + -4x = 15 + 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.
99 + -4x + -1x = 15 + x + -1x

Combine like terms: -4x + -1x = -5x
99 + -5x = 15 + x + -1x

Combine like terms: x + -1x = 0
99 + -5x = 15 + 0
99 + -5x = 15

Add '-99' to each side of the equation.
99 + -99 + -5x = 15 + -99

Combine like terms: 99 + -99 = 0
0 + -5x = 15 + -99
-5x = 15 + -99

Combine like terms: 15 + -99 = -84
-5x = -84

Divide each side by '-5'.
x = 16.8

Simplifying
x = 16.8

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