Răspunsuri

2014-10-12T18:35:17+03:00
Pe x+5y+z il poti descompune in x+3y+2y+z=14 +14 =28.    3x+15y+3z=3(x+3y)+3(2y+z)=3 *14+3 *14= 42+42=84 ;  5x+19y+2z=5(x+3y)+2(2y+z)= 5*14 + 2*14=  70+28= 98
esti sigur ca ai scris corect : ''5x+11y-2z'' ????