-5(5+2n)=15

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Solution for -5(5+2n)=15 equation: 


Simplifying
-5(5 + 2n) = 15
(5 * -5 + 2n * -5) = 15
(-25 + -10n) = 15

Solving
-25 + -10n = 15

Solving for variable 'n'.

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

Add '25' to each side of the equation.
-25 + 25 + -10n = 15 + 25

Combine like terms: -25 + 25 = 0
0 + -10n = 15 + 25
-10n = 15 + 25

Combine like terms: 15 + 25 = 40
-10n = 40

Divide each side by '-10'.
n = -4

Simplifying
n = -4

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