3-2n-2n+15=n-7

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Solution for 3-2n-2n+15=n-7 equation:


Simplifying
3 + -2n + -2n + 15 = n + -7

Reorder the terms:
3 + 15 + -2n + -2n = n + -7

Combine like terms: 3 + 15 = 18
18 + -2n + -2n = n + -7

Combine like terms: -2n + -2n = -4n
18 + -4n = n + -7

Reorder the terms:
18 + -4n = -7 + n

Solving
18 + -4n = -7 + n

Solving for variable 'n'.

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

Add '-1n' to each side of the equation.
18 + -4n + -1n = -7 + n + -1n

Combine like terms: -4n + -1n = -5n
18 + -5n = -7 + n + -1n

Combine like terms: n + -1n = 0
18 + -5n = -7 + 0
18 + -5n = -7

Add '-18' to each side of the equation.
18 + -18 + -5n = -7 + -18

Combine like terms: 18 + -18 = 0
0 + -5n = -7 + -18
-5n = -7 + -18

Combine like terms: -7 + -18 = -25
-5n = -25

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

Simplifying
n = 5

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