31-(-6) We know minus and minus becomes plus 31+6 37
-7 minus -4 is -3
31
-46
-3
negative 49. This is because a minus multiplied by a plus is a minus.
positive 14
-14 - +7 - -25 = 4
-7-(-7)=0
-16 minus -9 is -7
This become a plus positive, -7 minus -7 leaves zero
10 minus -7 is the same as 10+7. So, 10--7=17.