0.8x+0.4=8.4-15.6-1.2x

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Solution for 0.8x+0.4=8.4-15.6-1.2x equation: 


Simplifying
0.8x + 0.4 = 8.4 + -15.6 + -1.2x

Reorder the terms:
0.4 + 0.8x = 8.4 + -15.6 + -1.2x

Combine like terms: 8.4 + -15.6 = -7.2
0.4 + 0.8x = -7.2 + -1.2x

Solving
0.4 + 0.8x = -7.2 + -1.2x

Solving for variable 'x'.

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

Add '1.2x' to each side of the equation.
0.4 + 0.8x + 1.2x = -7.2 + -1.2x + 1.2x

Combine like terms: 0.8x + 1.2x = 2x
0.4 + 2x = -7.2 + -1.2x + 1.2x

Combine like terms: -1.2x + 1.2x = 0.0
0.4 + 2x = -7.2 + 0.0
0.4 + 2x = -7.2

Add '-0.4' to each side of the equation.
0.4 + -0.4 + 2x = -7.2 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + 2x = -7.2 + -0.4
2x = -7.2 + -0.4

Combine like terms: -7.2 + -0.4 = -7.6
2x = -7.6

Divide each side by '2'.
x = -3.8

Simplifying
x = -3.8

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