Răspunsuri

2014-07-22T21:57:16+03:00
X/4=15+y/4
x+y=300
x/4-y/4=15
x-y=4*15
x-y=60
x=60+y
60+y+y=300
2y=300-60
2y=240
y=120
x=120+60
x=180
1 5 1
2014-07-22T22:18:40+03:00
1/4*x=1/4*y+15
x+y=300
x=y+60
y+y+60=300
2y=240
y=120
x=300-120
x=180