Răspuns :
a+b=80
a/b=1/4 (a=b/4)
inlocuim in problema initiala :
b/4 + b=80 (aducem la acelasi numitor ----> 4)
b + 4b =320
5b=320
b=320 : 5 => b= 64/4
a/b=1/4 (a=b/4)
inlocuim in problema initiala :
b/4 + b=80 (aducem la acelasi numitor ----> 4)
b + 4b =320
5b=320
b=320 : 5 => b= 64/4