7x-3(2x+13)=-31

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Solution for 7x-3(2x+13)=-31 equation:


Simplifying
7x + -3(2x + 13) = -31

Reorder the terms:
7x + -3(13 + 2x) = -31
7x + (13 * -3 + 2x * -3) = -31
7x + (-39 + -6x) = -31

Reorder the terms:
-39 + 7x + -6x = -31

Combine like terms: 7x + -6x = 1x
-39 + 1x = -31

Solving
-39 + 1x = -31

Solving for variable 'x'.

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

Add '39' to each side of the equation.
-39 + 39 + 1x = -31 + 39

Combine like terms: -39 + 39 = 0
0 + 1x = -31 + 39
1x = -31 + 39

Combine like terms: -31 + 39 = 8
1x = 8

Divide each side by '1'.
x = 8

Simplifying
x = 8

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