.3(x+60)-.03(x-20)=15.9

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Solution for .3(x+60)-.03(x-20)=15.9 equation:


Simplifying
0.3(x + 60) + -0.03(x + -20) = 15.9

Reorder the terms:
0.3(60 + x) + -0.03(x + -20) = 15.9
(60 * 0.3 + x * 0.3) + -0.03(x + -20) = 15.9
(18 + 0.3x) + -0.03(x + -20) = 15.9

Reorder the terms:
18 + 0.3x + -0.03(-20 + x) = 15.9
18 + 0.3x + (-20 * -0.03 + x * -0.03) = 15.9
18 + 0.3x + (0.6 + -0.03x) = 15.9

Reorder the terms:
18 + 0.6 + 0.3x + -0.03x = 15.9

Combine like terms: 18 + 0.6 = 18.6
18.6 + 0.3x + -0.03x = 15.9

Combine like terms: 0.3x + -0.03x = 0.27x
18.6 + 0.27x = 15.9

Solving
18.6 + 0.27x = 15.9

Solving for variable 'x'.

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

Add '-18.6' to each side of the equation.
18.6 + -18.6 + 0.27x = 15.9 + -18.6

Combine like terms: 18.6 + -18.6 = 0.0
0.0 + 0.27x = 15.9 + -18.6
0.27x = 15.9 + -18.6

Combine like terms: 15.9 + -18.6 = -2.7
0.27x = -2.7

Divide each side by '0.27'.
x = -10

Simplifying
x = -10

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