-3.5+4.6+1.6x+7=x-3.9

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Solution for -3.5+4.6+1.6x+7=x-3.9 equation: 


Simplifying
-3.5 + 4.6 + 1.6x + 7 = x + -3.9

Reorder the terms:
-3.5 + 4.6 + 7 + 1.6x = x + -3.9

Combine like terms: -3.5 + 4.6 = 1.1
1.1 + 7 + 1.6x = x + -3.9

Combine like terms: 1.1 + 7 = 8.1
8.1 + 1.6x = x + -3.9

Reorder the terms:
8.1 + 1.6x = -3.9 + x

Solving
8.1 + 1.6x = -3.9 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
8.1 + 1.6x + -1x = -3.9 + x + -1x

Combine like terms: 1.6x + -1x = 0.6x
8.1 + 0.6x = -3.9 + x + -1x

Combine like terms: x + -1x = 0
8.1 + 0.6x = -3.9 + 0
8.1 + 0.6x = -3.9

Add '-8.1' to each side of the equation.
8.1 + -8.1 + 0.6x = -3.9 + -8.1

Combine like terms: 8.1 + -8.1 = 0.0
0.0 + 0.6x = -3.9 + -8.1
0.6x = -3.9 + -8.1

Combine like terms: -3.9 + -8.1 = -12
0.6x = -12

Divide each side by '0.6'.
x = -20

Simplifying
x = -20

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