2(90-9x)=7x-20

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Solution for 2(90-9x)=7x-20 equation:


Simplifying
2(90 + -9x) = 7x + -20
(90 * 2 + -9x * 2) = 7x + -20
(180 + -18x) = 7x + -20

Reorder the terms:
180 + -18x = -20 + 7x

Solving
180 + -18x = -20 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
180 + -18x + -7x = -20 + 7x + -7x

Combine like terms: -18x + -7x = -25x
180 + -25x = -20 + 7x + -7x

Combine like terms: 7x + -7x = 0
180 + -25x = -20 + 0
180 + -25x = -20

Add '-180' to each side of the equation.
180 + -180 + -25x = -20 + -180

Combine like terms: 180 + -180 = 0
0 + -25x = -20 + -180
-25x = -20 + -180

Combine like terms: -20 + -180 = -200
-25x = -200

Divide each side by '-25'.
x = 8

Simplifying
x = 8

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