Răspunsuri

2014-06-04T15:35:20+03:00
1000-100= 900surprize 
900*2=1800 surprize 
Cel mai inteligent răspuns!
2014-06-04T15:36:53+03:00
A+b=1000
a-100=x => a=x+100
b+b=x=>2b=x =>b=x/2

x+100+x/2=1000
2x+200+x=2000
3x=2000-200
3x=1800
x=1800:3
x=600

a=600+100
a=700

b=600/2
b=300