9x-12-7x-15=4

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Solution for 9x-12-7x-15=4 equation:


Simplifying
9x + -12 + -7x + -15 = 4

Reorder the terms:
-12 + -15 + 9x + -7x = 4

Combine like terms: -12 + -15 = -27
-27 + 9x + -7x = 4

Combine like terms: 9x + -7x = 2x
-27 + 2x = 4

Solving
-27 + 2x = 4

Solving for variable 'x'.

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

Add '27' to each side of the equation.
-27 + 27 + 2x = 4 + 27

Combine like terms: -27 + 27 = 0
0 + 2x = 4 + 27
2x = 4 + 27

Combine like terms: 4 + 27 = 31
2x = 31

Divide each side by '2'.
x = 15.5

Simplifying
x = 15.5

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