13x-8x-20=15

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Solution for 13x-8x-20=15 equation: 


Simplifying
13x + -8x + -20 = 15

Reorder the terms:
-20 + 13x + -8x = 15

Combine like terms: 13x + -8x = 5x
-20 + 5x = 15

Solving
-20 + 5x = 15

Solving for variable 'x'.

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

Add '20' to each side of the equation.
-20 + 20 + 5x = 15 + 20

Combine like terms: -20 + 20 = 0
0 + 5x = 15 + 20
5x = 15 + 20

Combine like terms: 15 + 20 = 35
5x = 35

Divide each side by '5'.
x = 7

Simplifying
x = 7

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