Question

Determinati numerele naturale a,b,c stiind ca:
3(b+c)=15
2ab=60
4ac=80

Answer 1

Răspuns:

2ab=60

ab=60:2

ab=15

4ac=80

ac=80:20

ac=4

3(3+2)=15

c=2

b=3

2a*4=60

2a=60:4

2a=20

a=10

2*10*3=60

4*10*2=80