.12x+.20(5-x)=.8

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Solution for .12x+.20(5-x)=.8 equation:


Simplifying
0.12x + 0.20(5 + -1x) = 0.8
0.12x + (5 * 0.20 + -1x * 0.20) = 0.8
0.12x + (1 + -0.2x) = 0.8

Reorder the terms:
1 + 0.12x + -0.2x = 0.8

Combine like terms: 0.12x + -0.2x = -0.08x
1 + -0.08x = 0.8

Solving
1 + -0.08x = 0.8

Solving for variable 'x'.

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

Add '-1' to each side of the equation.
1 + -1 + -0.08x = 0.8 + -1

Combine like terms: 1 + -1 = 0
0 + -0.08x = 0.8 + -1
-0.08x = 0.8 + -1

Combine like terms: 0.8 + -1 = -0.2
-0.08x = -0.2

Divide each side by '-0.08'.
x = 2.5

Simplifying
x = 2.5

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