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