9=n-4

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Solution for 9=n-4 equation:


Simplifying
9 = n + -4

Reorder the terms:
9 = -4 + n

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

Combine like terms: n + -1n = 0
9 + -1n = -4 + 0
9 + -1n = -4

Add '-9' to each side of the equation.
9 + -9 + -1n = -4 + -9

Combine like terms: 9 + -9 = 0
0 + -1n = -4 + -9
-1n = -4 + -9

Combine like terms: -4 + -9 = -13
-1n = -13

Divide each side by '-1'.
n = 13

Simplifying
n = 13

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