120+0.8x=40+0.9x

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Solution for 120+0.8x=40+0.9x equation:


Simplifying
120 + 0.8x = 40 + 0.9x

Solving
120 + 0.8x = 40 + 0.9x

Solving for variable 'x'.

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

Add '-0.9x' to each side of the equation.
120 + 0.8x + -0.9x = 40 + 0.9x + -0.9x

Combine like terms: 0.8x + -0.9x = -0.1x
120 + -0.1x = 40 + 0.9x + -0.9x

Combine like terms: 0.9x + -0.9x = 0.0
120 + -0.1x = 40 + 0.0
120 + -0.1x = 40

Add '-120' to each side of the equation.
120 + -120 + -0.1x = 40 + -120

Combine like terms: 120 + -120 = 0
0 + -0.1x = 40 + -120
-0.1x = 40 + -120

Combine like terms: 40 + -120 = -80
-0.1x = -80

Divide each side by '-0.1'.
x = 800

Simplifying
x = 800

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