13=7x+6(-3x-7)

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Solution for 13=7x+6(-3x-7) equation:


Simplifying
13 = 7x + 6(-3x + -7)

Reorder the terms:
13 = 7x + 6(-7 + -3x)
13 = 7x + (-7 * 6 + -3x * 6)
13 = 7x + (-42 + -18x)

Reorder the terms:
13 = -42 + 7x + -18x

Combine like terms: 7x + -18x = -11x
13 = -42 + -11x

Solving
13 = -42 + -11x

Solving for variable 'x'.

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

Add '11x' to each side of the equation.
13 + 11x = -42 + -11x + 11x

Combine like terms: -11x + 11x = 0
13 + 11x = -42 + 0
13 + 11x = -42

Add '-13' to each side of the equation.
13 + -13 + 11x = -42 + -13

Combine like terms: 13 + -13 = 0
0 + 11x = -42 + -13
11x = -42 + -13

Combine like terms: -42 + -13 = -55
11x = -55

Divide each side by '11'.
x = -5

Simplifying
x = -5

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