Answer:
C. 20/27
Step-by-step explanation:
We have to isolate b using inverse operations.
5a(b - c) = d
Simplify using Distributive Property.
5ab - 5ac = d
Add 5ac to both sides.
5ab = d + 5ac
Divide both sides by 5a.
b = 5ac + d / 5a
Simple, y can be anything. Because you have no other variable on the other side to use; y can be whatever you want to plug-in to the equation.
35%=35/100=0.35
0.35x=42
divide both sides by 0.35
x=120
35% of 120 is 42
Answer=120