Răspuns :
4b+3r=17
3b+2r=12
4b=17-3r
b=(17-3r)/4
3(17-3r)/4+2r=12
(51-9r+8r/)4=12
51-r=48
r=3
b=(17-9)/4=8:4=2
3b+2r=12
4b=17-3r
b=(17-3r)/4
3(17-3r)/4+2r=12
(51-9r+8r/)4=12
51-r=48
r=3
b=(17-9)/4=8:4=2
4b + 3r = 17 | * 2
3b + 2r = 12 | * 3
8b + 6r = 34
9b + 6r = 36, le scadem
________________
b / = 2
bluza = 2 m
4 * 2 + 3r = 17
8 + 3r = 17
3r = 9
r = 3
rochie = 3 m
3b + 2r = 12 | * 3
8b + 6r = 34
9b + 6r = 36, le scadem
________________
b / = 2
bluza = 2 m
4 * 2 + 3r = 17
8 + 3r = 17
3r = 9
r = 3
rochie = 3 m