8)l+z+p+n=90
l=900x4:10=>l=3600:10=360
p=(900-360)x5:10=>p=540x5:10=2700:10=270
z=900-(270+360)x3:10=900-630=540x3:10=1620:10=162
n=900-(270+360+162)=900-792=108
9)nu imi e iese e gresita
10)lr+p+pov=280
lr=280x3:7=840:7=120
p=280-lrx2:5=280-120=160x2=320:5=64
pov=?=>pov=280-(120+64)=280-184=96
11)a=368
b=368x6:8=2808:8=351
c=351x3:4=1053:4=?
mai recapituleaza si verifica tu!
succes in continuare