Răspunsuri

2014-08-27T10:02:59+03:00
A=3b/4
4a=3b
b= 4a/3

a=c-40
c=a+40

ma=(a+b+c)/3=80

a+b+c=80*3
a+b+c=240

a+4a/3 +a+40=240

2a+4a/3=240-40

2a+4a/3=200  aducem la acelasi numitor

6a+4a=600

10a=600

a=60

b=4*60/3=4*20=80

c=60+40=100
1 5 1