7x-12=4x+15

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


Simplifying
7x + -12 = 4x + 15

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

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

Solving
-12 + 7x = 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 + 7x + -4x = 15 + 4x + -4x

Combine like terms: 7x + -4x = 3x
-12 + 3x = 15 + 4x + -4x

Combine like terms: 4x + -4x = 0
-12 + 3x = 15 + 0
-12 + 3x = 15

Add '12' to each side of the equation.
-12 + 12 + 3x = 15 + 12

Combine like terms: -12 + 12 = 0
0 + 3x = 15 + 12
3x = 15 + 12

Combine like terms: 15 + 12 = 27
3x = 27

Divide each side by '3'.
x = 9

Simplifying
x = 9

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