.4X+.25(100-x)=.28

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Solution for .4X+.25(100-x)=.28 equation:


Simplifying
0.4X + 0.25(100 + -1x) = 0.28
0.4X + (100 * 0.25 + -1x * 0.25) = 0.28
0.4X + (25 + -0.25x) = 0.28

Reorder the terms:
25 + 0.4X + -0.25x = 0.28

Solving
25 + 0.4X + -0.25x = 0.28

Solving for variable 'X'.

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

Add '-25' to each side of the equation.
25 + 0.4X + -25 + -0.25x = 0.28 + -25

Reorder the terms:
25 + -25 + 0.4X + -0.25x = 0.28 + -25

Combine like terms: 25 + -25 = 0
0 + 0.4X + -0.25x = 0.28 + -25
0.4X + -0.25x = 0.28 + -25

Combine like terms: 0.28 + -25 = -24.72
0.4X + -0.25x = -24.72

Add '0.25x' to each side of the equation.
0.4X + -0.25x + 0.25x = -24.72 + 0.25x

Combine like terms: -0.25x + 0.25x = 0.00
0.4X + 0.00 = -24.72 + 0.25x
0.4X = -24.72 + 0.25x

Divide each side by '0.4'.
X = -61.8 + 0.625x

Simplifying
X = -61.8 + 0.625x

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