Question

Afla numaru necunoscut
64:a=5 rest 4
91:c= 9 rest 1

Answer 1

64/a = 5 rest 4 ⇔ 5a + 4 = 64 ⇔ 5a = 64 - 4 ⇔ 5a = 60 ⇔ a = 12
91/c = 9 rest 1 ⇔ 9c + 1 = 91 ⇔ 9c = 91 - 1 ⇔ 9c = 90 ⇔ c = 10