139=3(3-7n)-5n

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Solution for 139=3(3-7n)-5n equation:


Simplifying
139 = 3(3 + -7n) + -5n
139 = (3 * 3 + -7n * 3) + -5n
139 = (9 + -21n) + -5n

Combine like terms: -21n + -5n = -26n
139 = 9 + -26n

Solving
139 = 9 + -26n

Solving for variable 'n'.

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

Add '26n' to each side of the equation.
139 + 26n = 9 + -26n + 26n

Combine like terms: -26n + 26n = 0
139 + 26n = 9 + 0
139 + 26n = 9

Add '-139' to each side of the equation.
139 + -139 + 26n = 9 + -139

Combine like terms: 139 + -139 = 0
0 + 26n = 9 + -139
26n = 9 + -139

Combine like terms: 9 + -139 = -130
26n = -130

Divide each side by '26'.
n = -5

Simplifying
n = -5

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