Negative 9 plus 7 is the same as subtracting 9 from 7, which equals -2. When adding a negative number, it is essentially the same as subtracting the absolute value of that number. In this case, subtracting 9 from 7 gives us -2.
7 + (-9) = 7 - 9 = -2
9 + -2 = 7
Negative 7 -7
if you are talking about -16 plus 7 it is negative 9
-7 + 9 = 2
a.-5 b.-7 or c.-9
-2 no way the question is 7--9 which is 16
(-9) / (-7) * 7 = 9/7*7 = 9
-3 + -7 + 5 + -4 + -6 = -15
9
3/11+(-7/9) = -50/99
If there are no parenthesis then -9+9/7*7=0 as 0/49 =0