Răspunsuri

2014-05-24T12:43:26+03:00

a+a+1+a+2=57

3a=54

a=18

a+1=18+1=19

a+2=18+2=20

1 5 1
2014-05-24T12:52:12+03:00
A+a+1+a+2=57
3a+3=57
3a=54
a=54/3
a=18
b=19
c=20
1 5 1