7x+15=2x+90

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Solution for 7x+15=2x+90 equation:


Simplifying
7x + 15 = 2x + 90

Reorder the terms:
15 + 7x = 2x + 90

Reorder the terms:
15 + 7x = 90 + 2x

Solving
15 + 7x = 90 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
15 + 7x + -2x = 90 + 2x + -2x

Combine like terms: 7x + -2x = 5x
15 + 5x = 90 + 2x + -2x

Combine like terms: 2x + -2x = 0
15 + 5x = 90 + 0
15 + 5x = 90

Add '-15' to each side of the equation.
15 + -15 + 5x = 90 + -15

Combine like terms: 15 + -15 = 0
0 + 5x = 90 + -15
5x = 90 + -15

Combine like terms: 90 + -15 = 75
5x = 75

Divide each side by '5'.
x = 15

Simplifying
x = 15

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