13=7x-3x-7

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


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

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

Combine like terms: 7x + -3x = 4x
13 = -7 + 4x

Solving
13 = -7 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
13 + -4x = -7 + 4x + -4x

Combine like terms: 4x + -4x = 0
13 + -4x = -7 + 0
13 + -4x = -7

Add '-13' to each side of the equation.
13 + -13 + -4x = -7 + -13

Combine like terms: 13 + -13 = 0
0 + -4x = -7 + -13
-4x = -7 + -13

Combine like terms: -7 + -13 = -20
-4x = -20

Divide each side by '-4'.
x = 5

Simplifying
x = 5

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