Răspuns :
Răspuns:
a+b=25=>a=25-b
2a+3b=60
2(25-b)+3b=60
50-2b+3b=60
b=60-50=>b=10 ap. cu 3 camere
a=25-10=>a=15 ap. cu 2 camere
Salut! :)
d + t = 25 | × 2
2d + 3t = 60
___________
2d + 2t = 50
2d + 3t = 60
___________ ( - )
/ t = 10
d = 25 - 10
d = 15