0.75(x-120)=0.25(x-30)

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Solution for 0.75(x-120)=0.25(x-30) equation:


Simplifying
0.75(x + -120) = 0.25(x + -30)

Reorder the terms:
0.75(-120 + x) = 0.25(x + -30)
(-120 * 0.75 + x * 0.75) = 0.25(x + -30)
(-90 + 0.75x) = 0.25(x + -30)

Reorder the terms:
-90 + 0.75x = 0.25(-30 + x)
-90 + 0.75x = (-30 * 0.25 + x * 0.25)
-90 + 0.75x = (-7.5 + 0.25x)

Solving
-90 + 0.75x = -7.5 + 0.25x

Solving for variable 'x'.

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

Add '-0.25x' to each side of the equation.
-90 + 0.75x + -0.25x = -7.5 + 0.25x + -0.25x

Combine like terms: 0.75x + -0.25x = 0.5x
-90 + 0.5x = -7.5 + 0.25x + -0.25x

Combine like terms: 0.25x + -0.25x = 0.00
-90 + 0.5x = -7.5 + 0.00
-90 + 0.5x = -7.5

Add '90' to each side of the equation.
-90 + 90 + 0.5x = -7.5 + 90

Combine like terms: -90 + 90 = 0
0 + 0.5x = -7.5 + 90
0.5x = -7.5 + 90

Combine like terms: -7.5 + 90 = 82.5
0.5x = 82.5

Divide each side by '0.5'.
x = 165

Simplifying
x = 165

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