Răspunsuri

2014-08-05T16:26:07+03:00
A+b=40

a-4=b+4

a=b+4+4

a=b+8

b+8+b=40

2b+8=40

2b=40-8

2b=32

b=16  =>a=16+8=34
2014-08-06T02:25:18+03:00
Notam cu x+4=primul vas
notam cu x-4=al doilea vas

x+4+x-4=40
2x=40
x=20
20+4=24 litrii in primul vas
20-4=16 litrii in al doilea vas