a=flori prima cutie
b=flori a 2-a cutie
c=flori a 3-a cutie
a+b+c=43
4(a-4 )= b+4 4a-16=b+4 a=(b+20)/4
2(c-2) = b+2 2c-4=b+2 c=(b+6 )/2
(b+20)/4+b+(b+6)/2=43
b+20+4b+2b+12=43x4
7b+20+12=172
7b=172-32
7b=140
b=140/7=20 flori in cutia 2
a=(20+20)/4=10 flori in cutia 1
c=(20+6)/2=13 in cutia 3