-9=-4n-5n

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Solution for -9=-4n-5n equation:


Simplifying
-9 = -4n + -5n

Combine like terms: -4n + -5n = -9n
-9 = -9n

Solving
-9 = -9n

Solving for variable 'n'.

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

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

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

Add '9' to each side of the equation.
-9 + 9 + 9n = 0 + 9

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

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

Divide each side by '9'.
n = 1

Simplifying
n = 1

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