Răspunsuri

2014-10-04T15:00:50+03:00
A+b+c+a = 28+20
2a + b+c=48
2a+16=48
2a=32
a=16
rezulta ca : a=16 , b= 12 , c=4
1 4 1
2014-10-04T15:01:48+03:00
A+b=28
b+c=16
c+a=20
2a+2b+2c=64
a+b+c=64:2
a+b+c=32
a=32-16
a=16
b=32-20
b=12
c=32-28
b=4