that is 4 plus 6 because there is a negative outside of the parenthesis so that makes it a positive so that would be 10 divided by -5 wich is - 2 because a negative devided by positive is always a negative
Since there are two negatives, double negative is equal to positive so 4-(-6) = 4+ 6 = 10. Next it's 10/-5, the easiest way to do that is to divide 10 by 5 and then put the sign in. 10/5 = 2 and negative divided by positive is always negative so... 10/-5 = -2.