9(x-20)=7x

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


Simplifying
9(x + -20) = 7x

Reorder the terms:
9(-20 + x) = 7x
(-20 * 9 + x * 9) = 7x
(-180 + 9x) = 7x

Solving
-180 + 9x = 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 + 9x + -7x = 7x + -7x

Combine like terms: 9x + -7x = 2x
-180 + 2x = 7x + -7x

Combine like terms: 7x + -7x = 0
-180 + 2x = 0

Add '180' to each side of the equation.
-180 + 180 + 2x = 0 + 180

Combine like terms: -180 + 180 = 0
0 + 2x = 0 + 180
2x = 0 + 180

Combine like terms: 0 + 180 = 180
2x = 180

Divide each side by '2'.
x = 90

Simplifying
x = 90

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