Question

Calculati suma dintre numarul x si opusul numarului y
X=-3spra4 ;y=-1spra5

Answer 1

-3/4+5=-3/4+20/4=17/4

Answer 2

Opusul numarului $- \frac{3}{4} = -\frac{4}{3}$
Iar opusul lui $- \frac{1}{5}= - \frac{5}{1}$
Adunate:$(-\frac{4}{3})+ (-\frac{5}{1})=- \frac{4}{3}+(- \frac{15}{3})=- \frac{19}{3}$