notam cu: a=petunii
b=panselute
c=zambile
1) Aflam cate flori sunt in total:
546×3=1638 (flori)
a+b+c= 1638
2) Aflam cate zambile s-au plantat:
a+b=1212
c=1638-1212=426(zambile)
3) Aflam cate petunii s-au plantat:
b+c=1041
a=1638-1041=597 (petunii)
4) Aflam cate panselute s-au plantat:
1638-(426+597)=1638-1023=615(panselute)