12n+5-7=45

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Solution for 12n+5-7=45 equation:


Simplifying
12n + 5 + -7 = 45

Reorder the terms:
5 + -7 + 12n = 45

Combine like terms: 5 + -7 = -2
-2 + 12n = 45

Solving
-2 + 12n = 45

Solving for variable 'n'.

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

Add '2' to each side of the equation.
-2 + 2 + 12n = 45 + 2

Combine like terms: -2 + 2 = 0
0 + 12n = 45 + 2
12n = 45 + 2

Combine like terms: 45 + 2 = 47
12n = 47

Divide each side by '12'.
n = 3.916666667

Simplifying
n = 3.916666667

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