Question

Afla numerele necunoscute..... a:4=9. b-4=9. 30:a=5. 30-b=5​

Answer 1

Răspuns:

a:4=9

a=9×4

a=36

v:36:4=9

b-4=9

b=9+4

b=13

v:13-4=9

30:a=5

a=30:5

a=6

v:30:6=5

30-b=5

b=30-5

b=25

v:30-25=5