Question

va rog ajutatima ex 10 si 8

Answer 1

44x+4x4+x44=1221
44x=400+40+x=440+x
4x4=400+10x+4=404+10x
x44=100x+40+4=100x+44  si avem
440+x+404+10x+100x+44=1221
888+111x=1221
111x=333   x=333/111   x=3
10) x:y=3 rest 19  x=3y+19
a) 2x-6y+3=2(3y+19)-6y+3=6y+38-6y+3=41
b) x+y>95
    3y+19+y