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3+12n-12=3+53\times 12+132
Use the distributive property to multiply n-1 by 12.
-9+12n=3+53\times 12+132
Subtract 12 from 3 to get -9.
-9+12n=3+636+132
Multiply 53 and 12 to get 636.
-9+12n=639+132
Add 3 and 636 to get 639.
-9+12n=771
Add 639 and 132 to get 771.
12n=771+9
Add 9 to both sides.
12n=780
Add 771 and 9 to get 780.
n=\frac{780}{12}
Divide both sides by 12.
n=65
Divide 780 by 12 to get 65.