Răspuns :
Notez nr cu a si b.
a+b=55
a/7=b/4=>a=7b/4
=>7b/4+b=55
11b=220
b=20=>a=35
a+b=55
a/7=b/4=>a=7b/4
=>7b/4+b=55
11b=220
b=20=>a=35
a b
7 4
a\7=b\4=t
a\7=t => a= 7t
b\4=t => b=4t acum inlocuim in :a+b=55 si avem:
7t+4t=55
11t=55
t=55:11
t=5=> inlocuim pt a afla cele 2 nr.
a=7t=>a=7*5=>a=35
b=4t =>b=4*5 => b=20.
7 4
a\7=b\4=t
a\7=t => a= 7t
b\4=t => b=4t acum inlocuim in :a+b=55 si avem:
7t+4t=55
11t=55
t=55:11
t=5=> inlocuim pt a afla cele 2 nr.
a=7t=>a=7*5=>a=35
b=4t =>b=4*5 => b=20.