.25x+.15(100-x)=.19(100)

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Solution for .25x+.15(100-x)=.19(100) equation:


Simplifying
0.25x + 0.15(100 + -1x) = 0.19(100)
0.25x + (100 * 0.15 + -1x * 0.15) = 0.19(100)
0.25x + (15 + -0.15x) = 0.19(100)

Reorder the terms:
15 + 0.25x + -0.15x = 0.19(100)

Combine like terms: 0.25x + -0.15x = 0.1x
15 + 0.1x = 0.19(100)

Multiply 0.19 * 100
15 + 0.1x = 19

Solving
15 + 0.1x = 19

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 = 19 + -15

Combine like terms: 15 + -15 = 0
0 + 0.1x = 19 + -15
0.1x = 19 + -15

Combine like terms: 19 + -15 = 4
0.1x = 4

Divide each side by '0.1'.
x = 40

Simplifying
x = 40

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