Question

(-40)-(-18)

Answer 1

-22

Answer 2

distribute the negative to -18. this will flip the sign and you can view this problem easier

Answer 3

@Dedes is correct

Answer 4

A tip: if you have a negative directly after another negative, then they cancel out to form a positive.
So...
(-40)-(-18)
=(-40)+(+18) "cancel out", change to positive
=(-40)+(18) simplify
=(18)+(-40) commutative
=-22 subtraction