How do i add two negative fractions?

Answer 1

(-1 * a/b) + (-1 *c/d)
= -1 (a/b +c/d) distributive property
= -(a/b+c/d)

Answer 2

huh?ok the problem is -1/14+(-3/7)

Answer 3

-(1/14 +3/7)
- (1/14 + 6/14)
- 7/14
-1/2