2+=4+2 10+6=6+ 9+8=8+
9+=12 18-6= 13-=7
7-5= 19-3= 6+12= 9+9=
7+3+6= 9+0+6= 6+8-2= 18-5+2=
6+34+5 13-41+3 8-08+0
7+717-7 16-516-4 12-48+4