+77/-7=
-2+4-8-3-11-10+25=
(-3)(-5)=
(-7)(+3)(-10)=
(+2)(-5)(+3)=
-27/-3=
+8-3+9-5+2-1=
-7-9-2+8-3+1=
+8-3+9-5+2-10=
-10/+5=
-12
10
-30
+15
+9
+210
+1
-11
-2
-5
