2x+13+5x-21=90

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Solution for 2x+13+5x-21=90 equation:


Simplifying
2x + 13 + 5x + -21 = 90

Reorder the terms:
13 + -21 + 2x + 5x = 90

Combine like terms: 13 + -21 = -8
-8 + 2x + 5x = 90

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

Solving
-8 + 7x = 90

Solving for variable 'x'.

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

Add '8' to each side of the equation.
-8 + 8 + 7x = 90 + 8

Combine like terms: -8 + 8 = 0
0 + 7x = 90 + 8
7x = 90 + 8

Combine like terms: 90 + 8 = 98
7x = 98

Divide each side by '7'.
x = 14

Simplifying
x = 14

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