4 + -5/2 - 5 = -7/2 = -3 and 1/2
5
0.3684
7
7
2
-2/5 ÷ 7/10 = -4/7
(8/35) / (-2/7) = (8/35) * (-7/2) = -4/5
negative seven, but if you were subtracting -2 from -5 it would be -3
-5 + +7 = -5 + 7 = +2 = 2
It is a plus positive, so -7 subtracting -2 is negative 5 - -5 when you are subtracting a negative, you just add the amount it is worth. So, -7-(-2)=-7 + 2= -5
0.2857