7x-7(-x-13)=161

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Solution for 7x-7(-x-13)=161 equation:


Simplifying
7x + -7(-1x + -13) = 161

Reorder the terms:
7x + -7(-13 + -1x) = 161
7x + (-13 * -7 + -1x * -7) = 161
7x + (91 + 7x) = 161

Reorder the terms:
91 + 7x + 7x = 161

Combine like terms: 7x + 7x = 14x
91 + 14x = 161

Solving
91 + 14x = 161

Solving for variable 'x'.

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

Add '-91' to each side of the equation.
91 + -91 + 14x = 161 + -91

Combine like terms: 91 + -91 = 0
0 + 14x = 161 + -91
14x = 161 + -91

Combine like terms: 161 + -91 = 70
14x = 70

Divide each side by '14'.
x = 5

Simplifying
x = 5

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