Question

e:f=4 rest 3
e+f=123
e=?,f=?

Answer 1

e+f=123  e:f=4r3=>e=4f+3            4f+3+f=123=>5f+3=123=>5f=123-3=>f=120:5=>f=24      e+24=123=>e=123-24=>e=99      proba:99+24= 123