ALGEBRA Number Walls
N
N N
N N N
N N N N + 46 = 51
N =
missing number 3 One less than missing number 7 33
N 3 N
N 3 N N + 3 N + 2 N
N 3 N N + 3 N + 2 N + 6 2N + 5 2N
N 3 N N + 3 N + 2 N + 6 2N + 5 2N + 8 4N + 13 = 33
N 3 N N + 3 N + 2 N + 6 2N + 5 2N + 8 4N N + 13 = 33 4N = 20 N = 5