Assume the expression is:
15 = 9 + 3n
Subtract both sides by 9 to get:
15 - 9 = 9 - 9 + 3n
6 = 3n
Finally, divide both sides by 3 to get:
6/3 = 3n/3
n = 2
Wiki User
∙ 2013-03-04 02:40:183n = 15 + 12 = 27, 27/3 = 9 = n
n=6
3n + 6 = -9 Subtract 6 from both sides: 3n = -15 Divide both sides by 3: n = -5 Therefore n = -5
3n+2 + (3n+3 - 3n+1) = 3n+1+1 + (3n+1+2 - 3n+1) = 3*3n+1 + (9*3n+1 - 3n+1)= (3+9-1)*3n+1 = 11*3n+1.
3 + 3n = 9 + 2n + 4n n = -2
It is 12n2 + 3n - 58
3n + 2 + (3n + 3 - 3n + 1) = 3n + 2 + (3n + 3 - 3n + 1) = 3n + 2 + (4) = 3n + 6
-3(n-5)=24 -3n + 15 = 24 -3n= 24-15 -3n = 9 n=9/-3 n=-3
3n+2+3n+2=6n+4
(3n + 15) / 2
3n - 9 + 4n = 8nCombine like terms:7n - 9 = 8nSubtract 7n from both sides:-9 = n
3n