The answer is n = 5.
3n + 4n = 42 7n = 42 n = 42/7 n = 6
4n + 3 = 15 4n +3 - 3 = 15 - 3 4n = 12 4n/4 = 12/4 n = 3
n = 1 7n + 6n - 5 = 4n + 4 13n - 5 = 4n + 4 13n - 4n - 5 = 4n - 4n + 4 9n - 5 = 4 9n -5 + 5 = 4 + 5 9n = 9 n = 1
4n - 2n = 18 Therefore, 2n = 18 Therefore, n = 18/2 = 9
1
4n + 3 = 31n 3 = 27n n = 3/27
The LCM of 4n and 6n is 12n.
4n -14 = 22 4n = 22+14 4n = 36 n = 9
As follows:- 4n+13 = n-8 4n-n = -8-13 3n = -21 n = -7
8 x 0 =4n 0 = 4n 0=n
12+4n = 2n12+4n-4n = 2n-4n12 = -2n-1/2(12 = -2n)-6 = n
4n-8=3n+2 4n=3n+2+8 4n=3n+10 4n-3n+10 n=10 N = 10
The answer is n = 5.
3n + 4n = 42 7n = 42 n = 42/7 n = 6
n = -8
Move the 2n over the equals sign. Become 4n (as 6n-2n= 4n) and then if 4n=16 then n=4.