Răspunsuri

2014-08-28T11:36:45+03:00
A-b=5864
a=5864+b

a+(a+b)=7b

5864+5864+b+b+b=7b

11728+2b+b=7b

7b-3b=11728
4b=11728

b=2932

a=5864+2932

a=8796
Gresit, la 5864+5864+b+b=7b ai ratat un b, in membrul stang sunt doar 2a, dar tu ai de facut 2a+b
2014-08-28T11:41:10+03:00
A-b = 5864
a+a+b=7b
2a+b=7b
2a=7b-b
2a=6b
a=6b/2
a=3b
3b-b=5864
2b=5864
b=5864/2
b=2932
A-2932=5864
a=8796