7x-90=x+72

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Solution for 7x-90=x+72 equation:


Simplifying
7x + -90 = x + 72

Reorder the terms:
-90 + 7x = x + 72

Reorder the terms:
-90 + 7x = 72 + x

Solving
-90 + 7x = 72 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-90 + 7x + -1x = 72 + x + -1x

Combine like terms: 7x + -1x = 6x
-90 + 6x = 72 + x + -1x

Combine like terms: x + -1x = 0
-90 + 6x = 72 + 0
-90 + 6x = 72

Add '90' to each side of the equation.
-90 + 90 + 6x = 72 + 90

Combine like terms: -90 + 90 = 0
0 + 6x = 72 + 90
6x = 72 + 90

Combine like terms: 72 + 90 = 162
6x = 162

Divide each side by '6'.
x = 27

Simplifying
x = 27

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