9(10-2x)=2x+40

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Solution for 9(10-2x)=2x+40 equation: 


Simplifying
9(10 + -2x) = 2x + 40
(10 * 9 + -2x * 9) = 2x + 40
(90 + -18x) = 2x + 40

Reorder the terms:
90 + -18x = 40 + 2x

Solving
90 + -18x = 40 + 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.
90 + -18x + -2x = 40 + 2x + -2x

Combine like terms: -18x + -2x = -20x
90 + -20x = 40 + 2x + -2x

Combine like terms: 2x + -2x = 0
90 + -20x = 40 + 0
90 + -20x = 40

Add '-90' to each side of the equation.
90 + -90 + -20x = 40 + -90

Combine like terms: 90 + -90 = 0
0 + -20x = 40 + -90
-20x = 40 + -90

Combine like terms: 40 + -90 = -50
-20x = -50

Divide each side by '-20'.
x = 2.5

Simplifying
x = 2.5

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