This become a plus positive, -7 minus -7 leaves zero
-11
Seven minus negative two times negative 4 is equal to -1
13
Seven minus a negative six equals a positive one
Negative three.
-10 minus 7 is -17
-7 minus 5 is -12.
-7--1=6. A double minus makes a plus.
-7
-10
10
positive four