.8x+5=0.2(40-x)

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Solution for .8x+5=0.2(40-x) equation:


Simplifying
0.8x + 5 = 0.2(40 + -1x)

Reorder the terms:
5 + 0.8x = 0.2(40 + -1x)
5 + 0.8x = (40 * 0.2 + -1x * 0.2)
5 + 0.8x = (8 + -0.2x)

Solving
5 + 0.8x = 8 + -0.2x

Solving for variable 'x'.

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

Add '0.2x' to each side of the equation.
5 + 0.8x + 0.2x = 8 + -0.2x + 0.2x

Combine like terms: 0.8x + 0.2x = 1x
5 + 1x = 8 + -0.2x + 0.2x

Combine like terms: -0.2x + 0.2x = 0.0
5 + 1x = 8 + 0.0
5 + 1x = 8

Add '-5' to each side of the equation.
5 + -5 + 1x = 8 + -5

Combine like terms: 5 + -5 = 0
0 + 1x = 8 + -5
1x = 8 + -5

Combine like terms: 8 + -5 = 3
1x = 3

Divide each side by '1'.
x = 3

Simplifying
x = 3

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