(9n+7)-(4n-5)=

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Solution for (9n+7)-(4n-5)= equation:


Simplifying
(9n + 7) + -1(4n + -5) = 0

Reorder the terms:
(7 + 9n) + -1(4n + -5) = 0

Remove parenthesis around (7 + 9n)
7 + 9n + -1(4n + -5) = 0

Reorder the terms:
7 + 9n + -1(-5 + 4n) = 0
7 + 9n + (-5 * -1 + 4n * -1) = 0
7 + 9n + (5 + -4n) = 0

Reorder the terms:
7 + 5 + 9n + -4n = 0

Combine like terms: 7 + 5 = 12
12 + 9n + -4n = 0

Combine like terms: 9n + -4n = 5n
12 + 5n = 0

Solving
12 + 5n = 0

Solving for variable 'n'.

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

Add '-12' to each side of the equation.
12 + -12 + 5n = 0 + -12

Combine like terms: 12 + -12 = 0
0 + 5n = 0 + -12
5n = 0 + -12

Combine like terms: 0 + -12 = -12
5n = -12

Divide each side by '5'.
n = -2.4

Simplifying
n = -2.4

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