Answer:

Explanation:
Our task is to solve the equation
for y.
By 'solving for y' we mean 'isolate y on one side of the equation, so that ultimately, we can find its value'.
We will solve for y by using inverse operations until y is all alone on one side. You get the idea.
So first, subtract 4x from both sides:


Then, divide both sides by 7:

Hence, b) is the right answer.
