14-8= 13-6= 9+5= 17-8= 8+8=
30+5= 24+30= 75-70= 39-6= 7+33=
81-2= 17+6= 26+4= 20+80= 100-30=
30+30= 3+87= 5+21= 68+5= 50-6=