7x-2x-3=12

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Solution for 7x-2x-3=12 equation: 


Simplifying
7x + -2x + -3 = 12

Reorder the terms:
-3 + 7x + -2x = 12

Combine like terms: 7x + -2x = 5x
-3 + 5x = 12

Solving
-3 + 5x = 12

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + 5x = 12 + 3

Combine like terms: -3 + 3 = 0
0 + 5x = 12 + 3
5x = 12 + 3

Combine like terms: 12 + 3 = 15
5x = 15

Divide each side by '5'.
x = 3

Simplifying
x = 3

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