If
A + C = A
F x D = F
B - G = G
A + H = E
B / H = G
E - G = F
and A-H represent the numbers from 0 to 7
Find the values of A, B, C, D, E, F and H.
Hint:
A + C = A ---> C should be 0
F x D = F ---> D should be 1
B - G = G ----> B = 2G, so B can be: 4,6, and G = 2,3
A + H = E
B / H = G --->B = 2G, so 2G / H = G, so H = 2
E - G = F
G can't be 0,1,2 because they are taken
G can't be 4 or more, because B would be more than 7
Thus, G is 3
B is 6
Take it from there