Calculati urmatoarele fractii 1/2+3/5, 1/3-1/5, 1/5+2/3, 2+1/3, 1/5-1/6, 1/2-1/2, 2/5+4/15, 3/5+5/3, 1/3+7/2, 1/5+10/15

Sunt notate sub forma de supra cu /​