Question

Va rog faceți 12 si 15 dau coroana

Answer 1

a)x+2×(3x-1)< sau egal cu 12

x=1

1+2×(3×1-1)=1+2×(3-1)=1+2×2=1+4=5

x=2

2+2×(3×2-1)=2+2×(6-1)=2+2×5=2+10=12

b)5(x+1)+2(×+1)<sau efal cu 42