2x-8+5x+7=90

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Solution for 2x-8+5x+7=90 equation:


Simplifying
2x + -8 + 5x + 7 = 90

Reorder the terms:
-8 + 7 + 2x + 5x = 90

Combine like terms: -8 + 7 = -1
-1 + 2x + 5x = 90

Combine like terms: 2x + 5x = 7x
-1 + 7x = 90

Solving
-1 + 7x = 90

Solving for variable 'x'.

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

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

Combine like terms: -1 + 1 = 0
0 + 7x = 90 + 1
7x = 90 + 1

Combine like terms: 90 + 1 = 91
7x = 91

Divide each side by '7'.
x = 13

Simplifying
x = 13

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