-3(5+5n)=25-7n

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Solution for -3(5+5n)=25-7n equation:


Simplifying
-3(5 + 5n) = 25 + -7n
(5 * -3 + 5n * -3) = 25 + -7n
(-15 + -15n) = 25 + -7n

Solving
-15 + -15n = 25 + -7n

Solving for variable 'n'.

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

Add '7n' to each side of the equation.
-15 + -15n + 7n = 25 + -7n + 7n

Combine like terms: -15n + 7n = -8n
-15 + -8n = 25 + -7n + 7n

Combine like terms: -7n + 7n = 0
-15 + -8n = 25 + 0
-15 + -8n = 25

Add '15' to each side of the equation.
-15 + 15 + -8n = 25 + 15

Combine like terms: -15 + 15 = 0
0 + -8n = 25 + 15
-8n = 25 + 15

Combine like terms: 25 + 15 = 40
-8n = 40

Divide each side by '-8'.
n = -5

Simplifying
n = -5

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