0.8(x+80)+0.4x=100

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Solution for 0.8(x+80)+0.4x=100 equation:


Simplifying
0.8(x + 80) + 0.4x = 100

Reorder the terms:
0.8(80 + x) + 0.4x = 100
(80 * 0.8 + x * 0.8) + 0.4x = 100
(64 + 0.8x) + 0.4x = 100

Combine like terms: 0.8x + 0.4x = 1.2x
64 + 1.2x = 100

Solving
64 + 1.2x = 100

Solving for variable 'x'.

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

Add '-64' to each side of the equation.
64 + -64 + 1.2x = 100 + -64

Combine like terms: 64 + -64 = 0
0 + 1.2x = 100 + -64
1.2x = 100 + -64

Combine like terms: 100 + -64 = 36
1.2x = 36

Divide each side by '1.2'.
x = 30

Simplifying
x = 30

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