👤

daca x+y=11 si z=8, aflati 2x+2y+5z

Răspuns :

2x + 2y + 5z = 2(x + y) + 5z = 2 x 11 + 5 x 8 = 22 + 40 = 64
2x+2y+z= 2(x+y) + 5z= 2*11+5*8= 22+40= 62