.9(2x+6)=20-(x+4)

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Solution for .9(2x+6)=20-(x+4) equation:


Simplifying
0.9(2x + 6) = 20 + -1(x + 4)

Reorder the terms:
0.9(6 + 2x) = 20 + -1(x + 4)
(6 * 0.9 + 2x * 0.9) = 20 + -1(x + 4)
(5.4 + 1.8x) = 20 + -1(x + 4)

Reorder the terms:
5.4 + 1.8x = 20 + -1(4 + x)
5.4 + 1.8x = 20 + (4 * -1 + x * -1)
5.4 + 1.8x = 20 + (-4 + -1x)

Combine like terms: 20 + -4 = 16
5.4 + 1.8x = 16 + -1x

Solving
5.4 + 1.8x = 16 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
5.4 + 1.8x + x = 16 + -1x + x

Combine like terms: 1.8x + x = 2.8x
5.4 + 2.8x = 16 + -1x + x

Combine like terms: -1x + x = 0
5.4 + 2.8x = 16 + 0
5.4 + 2.8x = 16

Add '-5.4' to each side of the equation.
5.4 + -5.4 + 2.8x = 16 + -5.4

Combine like terms: 5.4 + -5.4 = 0.0
0.0 + 2.8x = 16 + -5.4
2.8x = 16 + -5.4

Combine like terms: 16 + -5.4 = 10.6
2.8x = 10.6

Divide each side by '2.8'.
x = 3.785714286

Simplifying
x = 3.785714286

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