7(n+13)-(5n+21)=

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Solution for 7(n+13)-(5n+21)= equation:


Simplifying
7(n + 13) + -1(5n + 21) = 0

Reorder the terms:
7(13 + n) + -1(5n + 21) = 0
(13 * 7 + n * 7) + -1(5n + 21) = 0
(91 + 7n) + -1(5n + 21) = 0

Reorder the terms:
91 + 7n + -1(21 + 5n) = 0
91 + 7n + (21 * -1 + 5n * -1) = 0
91 + 7n + (-21 + -5n) = 0

Reorder the terms:
91 + -21 + 7n + -5n = 0

Combine like terms: 91 + -21 = 70
70 + 7n + -5n = 0

Combine like terms: 7n + -5n = 2n
70 + 2n = 0

Solving
70 + 2n = 0

Solving for variable 'n'.

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

Add '-70' to each side of the equation.
70 + -70 + 2n = 0 + -70

Combine like terms: 70 + -70 = 0
0 + 2n = 0 + -70
2n = 0 + -70

Combine like terms: 0 + -70 = -70
2n = -70

Divide each side by '2'.
n = -35

Simplifying
n = -35

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