.20x+.05(18-x)=.10(-18)

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Solution for .20x+.05(18-x)=.10(-18) equation:


Simplifying
0.20x + 0.05(18 + -1x) = 0.10(-18)
0.20x + (18 * 0.05 + -1x * 0.05) = 0.10(-18)
0.20x + (0.9 + -0.05x) = 0.10(-18)

Reorder the terms:
0.9 + 0.20x + -0.05x = 0.10(-18)

Combine like terms: 0.20x + -0.05x = 0.15x
0.9 + 0.15x = 0.10(-18)

Multiply 0.10 * -18
0.9 + 0.15x = -1.8

Solving
0.9 + 0.15x = -1.8

Solving for variable 'x'.

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

Add '-0.9' to each side of the equation.
0.9 + -0.9 + 0.15x = -1.8 + -0.9

Combine like terms: 0.9 + -0.9 = 0.0
0.0 + 0.15x = -1.8 + -0.9
0.15x = -1.8 + -0.9

Combine like terms: -1.8 + -0.9 = -2.7
0.15x = -2.7

Divide each side by '0.15'.
x = -18

Simplifying
x = -18

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