2x+15+5x-18=90

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Solution for 2x+15+5x-18=90 equation:


Simplifying
2x + 15 + 5x + -18 = 90

Reorder the terms:
15 + -18 + 2x + 5x = 90

Combine like terms: 15 + -18 = -3
-3 + 2x + 5x = 90

Combine like terms: 2x + 5x = 7x
-3 + 7x = 90

Solving
-3 + 7x = 90

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + 7x = 90 + 3

Combine like terms: -3 + 3 = 0
0 + 7x = 90 + 3
7x = 90 + 3

Combine like terms: 90 + 3 = 93
7x = 93

Divide each side by '7'.
x = 13.28571429

Simplifying
x = 13.28571429

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