Answer:
4h/5
Step-by-step explanation:
A and b are both accurate
For a:

which is true
For b:

which is also true
3x-9-5x = -7
combine like terms -9-2x = -7
add 9 to both sides
-2x = 2
divide both sides by -2
x - 2/-2 = -1
x = -1
Answer:
look it up
Step-by-step explanation: