.4(x)+.25(129-x)=.35(129)

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Solution for .4(x)+.25(129-x)=.35(129) equation:


Simplifying
0.4(x) + 0.25(129 + -1x) = 0.35(129)
0.4x + (129 * 0.25 + -1x * 0.25) = 0.35(129)
0.4x + (32.25 + -0.25x) = 0.35(129)

Reorder the terms:
32.25 + 0.4x + -0.25x = 0.35(129)

Combine like terms: 0.4x + -0.25x = 0.15x
32.25 + 0.15x = 0.35(129)

Multiply 0.35 * 129
32.25 + 0.15x = 45.15

Solving
32.25 + 0.15x = 45.15

Solving for variable 'x'.

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

Add '-32.25' to each side of the equation.
32.25 + -32.25 + 0.15x = 45.15 + -32.25

Combine like terms: 32.25 + -32.25 = 0.00
0.00 + 0.15x = 45.15 + -32.25
0.15x = 45.15 + -32.25

Combine like terms: 45.15 + -32.25 = 12.9
0.15x = 12.9

Divide each side by '0.15'.
x = 86

Simplifying
x = 86

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