7-3n=9-n

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Solution for 7-3n=9-n equation:


Simplifying
7 + -3n = 9 + -1n

Solving
7 + -3n = 9 + -1n

Solving for variable 'n'.

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

Add 'n' to each side of the equation.
7 + -3n + n = 9 + -1n + n

Combine like terms: -3n + n = -2n
7 + -2n = 9 + -1n + n

Combine like terms: -1n + n = 0
7 + -2n = 9 + 0
7 + -2n = 9

Add '-7' to each side of the equation.
7 + -7 + -2n = 9 + -7

Combine like terms: 7 + -7 = 0
0 + -2n = 9 + -7
-2n = 9 + -7

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

Divide each side by '-2'.
n = -1

Simplifying
n = -1

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