13=3x+7x-7

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Solution for 13=3x+7x-7 equation:


Simplifying
13 = 3x + 7x + -7

Reorder the terms:
13 = -7 + 3x + 7x

Combine like terms: 3x + 7x = 10x
13 = -7 + 10x

Solving
13 = -7 + 10x

Solving for variable 'x'.

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

Add '-10x' to each side of the equation.
13 + -10x = -7 + 10x + -10x

Combine like terms: 10x + -10x = 0
13 + -10x = -7 + 0
13 + -10x = -7

Add '-13' to each side of the equation.
13 + -13 + -10x = -7 + -13

Combine like terms: 13 + -13 = 0
0 + -10x = -7 + -13
-10x = -7 + -13

Combine like terms: -7 + -13 = -20
-10x = -20

Divide each side by '-10'.
x = 2

Simplifying
x = 2

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