Question

Aflati numarul ab cu bara deasupra in cazul in care ab+b=14
Urgent!!

Answer 1

10 a + b + b = 14

10 a + 2 b = 14 l : 2

5 a + b = 7 ⇒ a = 1 si b = 2

a ≠ 0; a = 1 ⇒ b = 7 - 5 ⇒ b = 2

5 + 2 = 7

ab = 12

Verific: 12 + 2 = 14

Answer 2

ab+b=14, a=1, b+b=4, 2b=4, b=2, ab=12