Plz ajutoor
-11x-2=0
9x-7,11=0



Răspuns :

a)11x=0+2=2
x=11:2=5,5

b)9x-7,11=0
9x=7,11+0=7,11
9x=7,11
x=7,11:9 sau
711:900=0,709