.75(x+12)+.75x-x=20

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Solution for .75(x+12)+.75x-x=20 equation:


Simplifying
0.75(x + 12) + 0.75x + -1x = 20

Reorder the terms:
0.75(12 + x) + 0.75x + -1x = 20
(12 * 0.75 + x * 0.75) + 0.75x + -1x = 20
(9 + 0.75x) + 0.75x + -1x = 20

Combine like terms: 0.75x + 0.75x = 1.5x
9 + 1.5x + -1x = 20

Combine like terms: 1.5x + -1x = 0.5x
9 + 0.5x = 20

Solving
9 + 0.5x = 20

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 0.5x = 20 + -9

Combine like terms: 9 + -9 = 0
0 + 0.5x = 20 + -9
0.5x = 20 + -9

Combine like terms: 20 + -9 = 11
0.5x = 11

Divide each side by '0.5'.
x = 22

Simplifying
x = 22

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