13x-12=40

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Solution for 13x-12=40 equation: 


Simplifying
13x + -12 = 40

Reorder the terms:
-12 + 13x = 40

Solving
-12 + 13x = 40

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + 13x = 40 + 12

Combine like terms: -12 + 12 = 0
0 + 13x = 40 + 12
13x = 40 + 12

Combine like terms: 40 + 12 = 52
13x = 52

Divide each side by '13'.
x = 4

Simplifying
x = 4

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