3n-(5+5n)=9

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Solution for 3n-(5+5n)=9 equation:


Simplifying
3n + -1(5 + 5n) = 9
3n + (5 * -1 + 5n * -1) = 9
3n + (-5 + -5n) = 9

Reorder the terms:
-5 + 3n + -5n = 9

Combine like terms: 3n + -5n = -2n
-5 + -2n = 9

Solving
-5 + -2n = 9

Solving for variable 'n'.

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

Add '5' to each side of the equation.
-5 + 5 + -2n = 9 + 5

Combine like terms: -5 + 5 = 0
0 + -2n = 9 + 5
-2n = 9 + 5

Combine like terms: 9 + 5 = 14
-2n = 14

Divide each side by '-2'.
n = -7

Simplifying
n = -7

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