Question

Cum se rezolva ex.10 ? Va rog frumos

Answer 1

a)
$x=35a + 63b \\ x = 7(5a+9b)$
=> x divide 7.

b)
$y = 48a+64b \\ y = 8(6a+8b)$
=> y divide 8.

c)
$u=5a+3b+2c \\ v = 4a+6b+7c \\ u+v = 9a+9b+9c = 9(a+b+c)$
=> u+v divide 9.