-7(0.1x+0.2)-3.1=-0.3

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Solution for -7(0.1x+0.2)-3.1=-0.3 equation: 


Simplifying
-7(0.1x + 0.2) + -3.1 = -0.3

Reorder the terms:
-7(0.2 + 0.1x) + -3.1 = -0.3
(0.2 * -7 + 0.1x * -7) + -3.1 = -0.3
(-1.4 + -0.7x) + -3.1 = -0.3

Reorder the terms:
-1.4 + -3.1 + -0.7x = -0.3

Combine like terms: -1.4 + -3.1 = -4.5
-4.5 + -0.7x = -0.3

Solving
-4.5 + -0.7x = -0.3

Solving for variable 'x'.

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

Add '4.5' to each side of the equation.
-4.5 + 4.5 + -0.7x = -0.3 + 4.5

Combine like terms: -4.5 + 4.5 = 0.0
0.0 + -0.7x = -0.3 + 4.5
-0.7x = -0.3 + 4.5

Combine like terms: -0.3 + 4.5 = 4.2
-0.7x = 4.2

Divide each side by '-0.7'.
x = -6

Simplifying
x = -6

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