Question

Daca x+y=72,y+z=48 si x+y=56 efectuați :a)(x+y)*(y+z):(x+z-2)b)(x+y)*(x+z):(y+z);c)(x+z)*(y+z):(x+y-8)

Answer 1

a)72*48:54=3456:54=64
b)72*56:48=4032:48=84
c)56*48:64=2688:64=42