Answer: 
Step-by-step explanation:
Given the equation
you need to solve for the variable "b".
You need to apply Distributive property on both sides of the equation:

Now you need to add 21 to both sides of the equation:

Subtract
from both sides:

And finally, you can divide both sides of the equation by 18:

Answer: I got C) 10.8
Step-by-step explanation:
Answer:
bbv bcb vhmnkdjefkmkhgjfnmd
Step-by-step explanation:
3x-4y=10
or,4y=3x-10
or,y=(3x-10)/4
so,y=3/4 x-5/2