7=-4n-(-9)

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


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

Multiply -1 * -9
7 = -4n + 9

Reorder the terms:
7 = 9 + -4n

Solving
7 = 9 + -4n

Solving for variable 'n'.

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

Add '4n' to each side of the equation.
7 + 4n = 9 + -4n + 4n

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

Add '-7' to each side of the equation.
7 + -7 + 4n = 9 + -7

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

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

Divide each side by '4'.
n = 0.5

Simplifying
n = 0.5

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