.25x+.15(140-x)=.18(140)

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Solution for .25x+.15(140-x)=.18(140) equation:


Simplifying
0.25x + 0.15(140 + -1x) = 0.18(140)
0.25x + (140 * 0.15 + -1x * 0.15) = 0.18(140)
0.25x + (21 + -0.15x) = 0.18(140)

Reorder the terms:
21 + 0.25x + -0.15x = 0.18(140)

Combine like terms: 0.25x + -0.15x = 0.1x
21 + 0.1x = 0.18(140)

Multiply 0.18 * 140
21 + 0.1x = 25.2

Solving
21 + 0.1x = 25.2

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + 0.1x = 25.2 + -21

Combine like terms: 21 + -21 = 0
0 + 0.1x = 25.2 + -21
0.1x = 25.2 + -21

Combine like terms: 25.2 + -21 = 4.2
0.1x = 4.2

Divide each side by '0.1'.
x = 42

Simplifying
x = 42

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