7.8x+0.2(x-4)=-16.8

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Solution for 7.8x+0.2(x-4)=-16.8 equation: 


Simplifying
7.8x + 0.2(x + -4) = -16.8

Reorder the terms:
7.8x + 0.2(-4 + x) = -16.8
7.8x + (-4 * 0.2 + x * 0.2) = -16.8
7.8x + (-0.8 + 0.2x) = -16.8

Reorder the terms:
-0.8 + 7.8x + 0.2x = -16.8

Combine like terms: 7.8x + 0.2x = 8x
-0.8 + 8x = -16.8

Solving
-0.8 + 8x = -16.8

Solving for variable 'x'.

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

Add '0.8' to each side of the equation.
-0.8 + 0.8 + 8x = -16.8 + 0.8

Combine like terms: -0.8 + 0.8 = 0.0
0.0 + 8x = -16.8 + 0.8
8x = -16.8 + 0.8

Combine like terms: -16.8 + 0.8 = -16
8x = -16

Divide each side by '8'.
x = -2

Simplifying
x = -2

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