Question

Aflati valoarea lui a daca: a+b=60 a be 5ori a=? b=?

Answer 1

b=5a
a+5a=60
6a=60
a=10
10+b=60
b=60-10
b=50

Answer 2

a+b= 60
b=5×a
a+5×a =60
6×a = 60 | :6
a = 10

b = 60-10
b = 50

verificare:
10+50=60