0.25x+0.15(100-x)=20

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Solution for 0.25x+0.15(100-x)=20 equation: 


Simplifying
0.25x + 0.15(100 + -1x) = 20
0.25x + (100 * 0.15 + -1x * 0.15) = 20
0.25x + (15 + -0.15x) = 20

Reorder the terms:
15 + 0.25x + -0.15x = 20

Combine like terms: 0.25x + -0.15x = 0.1x
15 + 0.1x = 20

Solving
15 + 0.1x = 20

Solving for variable 'x'.

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

Add '-15' to each side of the equation.
15 + -15 + 0.1x = 20 + -15

Combine like terms: 15 + -15 = 0
0 + 0.1x = 20 + -15
0.1x = 20 + -15

Combine like terms: 20 + -15 = 5
0.1x = 5

Divide each side by '0.1'.
x = 50

Simplifying
x = 50

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