.8(x+100)+.2x=105

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Solution for .8(x+100)+.2x=105 equation:


Simplifying
0.8(x + 100) + 0.2x = 105

Reorder the terms:
0.8(100 + x) + 0.2x = 105
(100 * 0.8 + x * 0.8) + 0.2x = 105
(80 + 0.8x) + 0.2x = 105

Combine like terms: 0.8x + 0.2x = 1x
80 + 1x = 105

Solving
80 + 1x = 105

Solving for variable 'x'.

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

Add '-80' to each side of the equation.
80 + -80 + 1x = 105 + -80

Combine like terms: 80 + -80 = 0
0 + 1x = 105 + -80
1x = 105 + -80

Combine like terms: 105 + -80 = 25
1x = 25

Divide each side by '1'.
x = 25

Simplifying
x = 25

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