Question

aflati cate note de 10 au obtinut elevii a clasei a VI-a D la ora de educatie fizica
repede!!!!!​

Answer 1

x = nr de note cu 9

y = nr de note cu 8

z = nr de note cu 10

==> y = x/2

==> x+y=3/5z

==> 3/5z+z=24

3z+5z/5=24

8z/5=24

8z=120

z=15

==> x+y=3/5 × z

==>x+y=3/5 × 15

x+y=45/5

x+y=9

==> y=x/2

==>x+x/2=9

3x/2=9

==> 3x=18

x=6

y=3