How much time has passed from the first clock to the second clock?

Leo has b boxes of pencils. each box contains 6 pencils. he has a total of 42 pencils. the equation that represents this situation the value of b that makes the equation true the first one is b+6=42,6b=42,b=42+6,or 42b=6 the second one are 7,836 48

Taking algebra two apex courses and need with these questions

What is the solution to the equation in the & show work i’m very