9+2n+2n=n+4-7

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Solution for 9+2n+2n=n+4-7 equation:


Simplifying
9 + 2n + 2n = n + 4 + -7

Combine like terms: 2n + 2n = 4n
9 + 4n = n + 4 + -7

Reorder the terms:
9 + 4n = 4 + -7 + n

Combine like terms: 4 + -7 = -3
9 + 4n = -3 + n

Solving
9 + 4n = -3 + 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.
9 + 4n + -1n = -3 + n + -1n

Combine like terms: 4n + -1n = 3n
9 + 3n = -3 + n + -1n

Combine like terms: n + -1n = 0
9 + 3n = -3 + 0
9 + 3n = -3

Add '-9' to each side of the equation.
9 + -9 + 3n = -3 + -9

Combine like terms: 9 + -9 = 0
0 + 3n = -3 + -9
3n = -3 + -9

Combine like terms: -3 + -9 = -12
3n = -12

Divide each side by '3'.
n = -4

Simplifying
n = -4

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