What should be added to 7/12 to get -4/15 ?

-17/20

Step-by-step explanation:

7/12 + x = -4/15

Subtract 7/12 from both sides

x = -4/15 - 7/12

Use 60 as common denominator

x = -16/60 - 35/60

x = -51/60

Reduce

x = -17/20

the graph on the bottom right