Question

a) Determinati nr prime a si b stiind ca 7a+16b=94
b) Determinati nr prime a, b si c stiind ca 2a+5b+6c=74

Answer 1

numerele prime sunt: 1,2,3,5,7,.11.....
a = 2 , b = 5
7a + 16 b = 94
7 x 2 + 16 x 5 = 14 + 80 = 94

b.  2a + 5b + 6 c = 74
a = 23 , b = 2 , c= 3
2 x 23 + 5 x 2 + 6 x 3 = 46 + 10 + 18 = 56 + 18 = 74