Răspunsuri

2014-06-20T12:59:40+03:00
X+y=32           => -2x-2y=-64   => 3y=36 => y=12 => x=36-12=24
2x+5y=100           2x+5y=100
oky
Gata
pai 12+24 nu da 32
da 36
si 2*12+5*24=24+120=144, cand trebuia sa dea 100
2014-06-20T13:06:57+03:00
A- camere cu 2 paturi
b- camere cu 5 paturi


a+b=32    /*(-2)
2a+5b=100

-2a-2b=-64
2a+5b=100
------------------------- (+)
3b=-64+100
3b=36
b=36:3
b=12 camere a cate 5 paturi

a+12=32
a=32-12
a=20 camere a cate 2 paturi

Verificare:
2*20+12+5=40+60=100 ADEVARAT