Răspunsuri

2014-05-26T16:28:57+03:00
A+b+c=170
a-b=50=>a=50+b
b-c=30=>c=b-30

50+b+b+b-30=170
3b-20=170
3b=170-20
3b=150
b=150:3
b=50

a=50+50
a=100

c=50-30
c=20

VERIFICARE
50+100+20=170
1 5 1
2014-05-26T17:15:24+03:00
A+b+c=170
a-b=50=>a=50+b
b-c=30=>c=b-30

50+b+b+b-30=170
3b-20=170
3b=170-20
3b=150
b=150:03
b=50

a=50+50
a=100

verificare:
50+100+20=170