Question

Aflati numerele x+y stiind ca x+y=5 intregi si 1/4 si 4x+1 intreg si 1/5=10 intregi si 1/5.

Answer 1

x+y =5.1/4  :   x+y =21/4
4x+1.1/5 =10.1/5
4x =10.1/5-1.1/5
4x =51/5-6/5   numitor 5
20x =51-6 =45
x =45 :20 =2.25

x+y =21/4
y =21/4-2.25
y =5.25-2.25 =3

x+y =2.25+3 =5.25