1)
I caz vaze=3f+14
IIcaz vaze=7(f-2) rezulta
3f+14=7f-14
7f-3f=14+14
4f=28
f=28:4=7
VAZE=7 buc
Proba
I caz;3f+14
3x7+14=21+14= 35 flori
II caz 7f-14=7x7-14=49-14=35 flori
2)1 ha=10000 m patrati
x= 4000 m patrati
4000:10000=0,4 ha
0,4 hax4100gr.=1640gr.=1,640 kg ingrasamant