Question

a+b+c=75 a=c:2 b:c= 2 rest 5 a=? b=? c=?

Answer 1

a+b+c=75
c=2a
b:c=2,rest5=>2c+5=b=>2(2a)+5=b

Inlocuim,in,prima,expresie
a+4a+5+2a=75
7a=70
a=10
b=45
c=20

Verificare
10+45+20=?75
75=75(A)