Question

in trei cabinete de chimie sunt 6784 eprubete. daca in primele doua sunt 4318 eprubete, iar in ultimele doua sunt 3514 eprubete, sa se afle cate eprubete sunt in fiecare cabinet.

Answer 1

a+b+c=6784 eprubete
a= primul cabinet
b= al doilea cabinet
c=al treilea cabinet
a+b=4318
b+c=3514
4318+c=6784
c=6784-4318
c=2466
a+3514=6784
a=6784-3514
a=3270
3270+b+2466=6784
b=6784-3270-2466
b=1048
proba
3270+1048+2466=6784 eprubete