n2 + 9n + 18 = (n + 6)(n + 3)
9n + n = 10n
9n+9=81 9n=72 n=8
n - 10 + 9n - 3 n + 9n - 10 - 3 10n - 13
3(3n - 1)(n + 1)
You need to get n alone.9n=45 → Divide by 9n=45/9n=5
If 9n = 36 then we divide both sides by 9 to discover what value n has If we divide 9n by 9 we get n If we divide 36 by 9 we get 4 so, if 9n = 36 the n = 4
The equation "9n equals 126" can be written as 9n = 126.
9n + 18 = 81 9n = 63 n = 7
n-10+(9n-3)=10n-13
n - 10 + 9n - 3 = 10n - 13
9n3