/ inseamna linia de fractie
7/5+3/5=7+3/5=10/5
5/4+9/4=14/4
6/8+7/8=13/8
2/7+3/7=5/7
2/6+9/6=11/6
9/5+8/5=17/5
4/2+1/2=5/2
6/7+2/7+3/7=11/7
3/4+4/4-2/4=7/4-2/4=5/4
3/2-2/2=1/2
daca ai acelasi numitor ( numărul de jos ) , se aduna numărătorii ( nr. de sus ) intre ei sau se scad , depinde ce operatie ai de facut.