120(5-x)=40(5+x)

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Solution for 120(5-x)=40(5+x) equation:


Simplifying
120(5 + -1x) = 40(5 + x)
(5 * 120 + -1x * 120) = 40(5 + x)
(600 + -120x) = 40(5 + x)
600 + -120x = (5 * 40 + x * 40)
600 + -120x = (200 + 40x)

Solving
600 + -120x = 200 + 40x

Solving for variable 'x'.

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

Add '-40x' to each side of the equation.
600 + -120x + -40x = 200 + 40x + -40x

Combine like terms: -120x + -40x = -160x
600 + -160x = 200 + 40x + -40x

Combine like terms: 40x + -40x = 0
600 + -160x = 200 + 0
600 + -160x = 200

Add '-600' to each side of the equation.
600 + -600 + -160x = 200 + -600

Combine like terms: 600 + -600 = 0
0 + -160x = 200 + -600
-160x = 200 + -600

Combine like terms: 200 + -600 = -400
-160x = -400

Divide each side by '-160'.
x = 2.5

Simplifying
x = 2.5

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