Question

a+b=55
a:b=4 rest 5
a=?
b=?

Answer 1

a:b=4 rest 5=>a=4b+5
4b+5+b=55
5b+5=55
5b=55-5
5b=50
b=10=>a=55-10
a=45

Answer 2

a:b=4 r5 deci a=b*4+5 si o inlocuiesti in adunare
b*4+5+b=55
5*b+5=55 scadem pe 5
5*b=50 imparti la 5 
b=10 
coroana??