Question

cum se rezolva problema 33??? va rog repede!

Answer 1

a+b+c=4350
a+b=2510
b+c=3190
a+b+b+c=2510+3190=5700
b=5700-4350=1350 elevi
a=2510-1350=1160 elevi
c=3190-1350=1840 elevi

Answer 2

a=elevii din prima scoala
b=elevii din a doua scoala
c=elevii din a treia scoala
a+b+c=4350
a+b=2510
b+c=3190
Le adunam si obtinem:
a+b+b+c=5700
(a+b+c)+b=5700
4350+b=5700
b=1350 elevi
a+1350=2510⇒a=1160 elevi
1350+c=3190⇒c=1840 elevi