.10x+.15(18-x)=2.5

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Solution for .10x+.15(18-x)=2.5 equation: 


Simplifying
0.10x + 0.15(18 + -1x) = 2.5
0.10x + (18 * 0.15 + -1x * 0.15) = 2.5
0.10x + (2.7 + -0.15x) = 2.5

Reorder the terms:
2.7 + 0.10x + -0.15x = 2.5

Combine like terms: 0.10x + -0.15x = -0.05x
2.7 + -0.05x = 2.5

Solving
2.7 + -0.05x = 2.5

Solving for variable 'x'.

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

Add '-2.7' to each side of the equation.
2.7 + -2.7 + -0.05x = 2.5 + -2.7

Combine like terms: 2.7 + -2.7 = 0.0
0.0 + -0.05x = 2.5 + -2.7
-0.05x = 2.5 + -2.7

Combine like terms: 2.5 + -2.7 = -0.2
-0.05x = -0.2

Divide each side by '-0.05'.
x = 4

Simplifying
x = 4

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