(n + 4)(n + 5)
n - 10 + 9n - 3 = 10n - 13
9n
9n-2=7n+50 7n+9n=50+2 16n=52 n= 3.25
9n
6(n+12) + 3(n+6) = 58.5 6n + 72 + 3n + 18 = 58.5 9n + 90 = 58.5 9n = 58.5 - 90 9n = -31.5 n = -3.5
n2 + 9n + 18 = (n + 6)(n + 3)
9n + n = 10n
9n+9=81 9n=72 n=8
3(3n - 1)(n + 1)
n - 10 + 9n - 3 n + 9n - 10 - 3 10n - 13
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
You need to get n alone.9n=45 → Divide by 9n=45/9n=5
The equation "9n equals 126" can be written as 9n = 126.
9n + 18 = 81 9n = 63 n = 7
n-10+(9n-3)=10n-13
9n3
n - 10 + 9n - 3 = 10n - 13