.20x+0.10(120-x)=.13(120)

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Solution for .20x+0.10(120-x)=.13(120) equation:


Simplifying
0.20x + 0.10(120 + -1x) = 0.13(120)
0.20x + (120 * 0.10 + -1x * 0.10) = 0.13(120)
0.20x + (12 + -0.1x) = 0.13(120)

Reorder the terms:
12 + 0.20x + -0.1x = 0.13(120)

Combine like terms: 0.20x + -0.1x = 0.1x
12 + 0.1x = 0.13(120)

Multiply 0.13 * 120
12 + 0.1x = 15.6

Solving
12 + 0.1x = 15.6

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 0.1x = 15.6 + -12

Combine like terms: 12 + -12 = 0
0 + 0.1x = 15.6 + -12
0.1x = 15.6 + -12

Combine like terms: 15.6 + -12 = 3.6
0.1x = 3.6

Divide each side by '0.1'.
x = 36

Simplifying
x = 36

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