-8v-5v
An equivalent expression has the same value:
If we add both terms:
-13v (equivalent)
v*-13 = -13v (equivalent)
If we switch places, the value is the same, and adding a negative number is the same as subtracting that number:
-5v+- 8v (equivalent)
-9v+v-5v (equivalent)
Add -9v+v=-8v
-8v-5v (equivalent)
All options are equivalent
