15-4n=45

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Solution for 15-4n=45 equation: 


Simplifying
15 + -4n = 45

Solving
15 + -4n = 45

Solving for variable 'n'.

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

Add '-15' to each side of the equation.
15 + -15 + -4n = 45 + -15

Combine like terms: 15 + -15 = 0
0 + -4n = 45 + -15
-4n = 45 + -15

Combine like terms: 45 + -15 = 30
-4n = 30

Divide each side by '-4'.
n = -7.5

Simplifying
n = -7.5

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