Question

Determinati numerele rationale pozitive a,b,c stiind ca a supra 1=b supra 2 =c supra 3
A)a+b+c=60
B)3a-b+c=20
Va rog urgent

Answer 1

a=b/2=c/3=(a+b+c)/6
a) 
a=60/6=10
b=2a=20
c=3a=30
b)
3a-b+c=a+b+c+2a-2b=20
a=(a+b+c)/6=(20-2a+2b)/6=[20-2a+4a)]/6
6a=20+2a, a=5
b=2a=10
c=3a=15