13=3x-x-7

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


Simplifying
13 = 3x + -1x + -7

Reorder the terms:
13 = -7 + 3x + -1x

Combine like terms: 3x + -1x = 2x
13 = -7 + 2x

Solving
13 = -7 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
13 + -2x = -7 + 2x + -2x

Combine like terms: 2x + -2x = 0
13 + -2x = -7 + 0
13 + -2x = -7

Add '-13' to each side of the equation.
13 + -13 + -2x = -7 + -13

Combine like terms: 13 + -13 = 0
0 + -2x = -7 + -13
-2x = -7 + -13

Combine like terms: -7 + -13 = -20
-2x = -20

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

Simplifying
x = 10

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