Entonces a=(a b c)/3-7.5.
c=(a b c)/3-2.5
Entonces a c=(2a 2b 2c)/3-10.
Entonces b=(a b c)-(a c)
=(a b c)/3 10
Entonces b-c=12.5
Entonces a=(a b c)/3-7.5.
c=(a b c)/3-2.5
Entonces a c=(2a 2b 2c)/3-10.
Entonces b=(a b c)-(a c)
=(a b c)/3 10
Entonces b-c=12.5