7
It doesn't ! -7 plus -5 equals -12 ! -7 plus 5 equals -2
96
If I am correct, 9 plus 7 equals 112.
negative one and a half
144
144 add the two numbers and multiply by the first 2(2 + 3) = 10 7(7 + 2) = 63 etc.
144
144
144 is the answer.2+3=10 which means 2+3=55*2=107+2=63 7+2=99*7=63now 9+7=? 9+7=1616*9=144
It is: y = -7 which is a straight line parallel to the x axis
144