15=-2n-3n

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Solution for 15=-2n-3n equation:


Simplifying
15 = -2n + -3n

Combine like terms: -2n + -3n = -5n
15 = -5n

Solving
15 = -5n

Solving for variable 'n'.

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

Add '5n' to each side of the equation.
15 + 5n = -5n + 5n

Combine like terms: -5n + 5n = 0
15 + 5n = 0

Add '-15' to each side of the equation.
15 + -15 + 5n = 0 + -15

Combine like terms: 15 + -15 = 0
0 + 5n = 0 + -15
5n = 0 + -15

Combine like terms: 0 + -15 = -15
5n = -15

Divide each side by '5'.
n = -3

Simplifying
n = -3

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