n/3 - 3 = 12
*add 3 to both sides
n/3 - 3 + 3 = 12 + 3
n/3= 15
*multiply 3 to both sides
n/3 * 3 = 15 * 3
n = 45
3 n − 3 = 12 n − 9 = 36 n = 45
To solve for n in the equation 3 n − 3 = 12 , first add 3 to both sides to get 3 n = 15 . Then multiply both sides by 3, resulting in n = 45 .
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