-2(n+3)-5(n+3)=7

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Solution for -2(n+3)-5(n+3)=7 equation:


Simplifying
-2(n + 3) + -5(n + 3) = 7

Reorder the terms:
-2(3 + n) + -5(n + 3) = 7
(3 * -2 + n * -2) + -5(n + 3) = 7
(-6 + -2n) + -5(n + 3) = 7

Reorder the terms:
-6 + -2n + -5(3 + n) = 7
-6 + -2n + (3 * -5 + n * -5) = 7
-6 + -2n + (-15 + -5n) = 7

Reorder the terms:
-6 + -15 + -2n + -5n = 7

Combine like terms: -6 + -15 = -21
-21 + -2n + -5n = 7

Combine like terms: -2n + -5n = -7n
-21 + -7n = 7

Solving
-21 + -7n = 7

Solving for variable 'n'.

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

Add '21' to each side of the equation.
-21 + 21 + -7n = 7 + 21

Combine like terms: -21 + 21 = 0
0 + -7n = 7 + 21
-7n = 7 + 21

Combine like terms: 7 + 21 = 28
-7n = 28

Divide each side by '-7'.
n = -4

Simplifying
n = -4

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