Basic maths/calculus/simplification question

[needtoimprovemycalculus]

Hi Folks
I am reviewing an old calculus textbook and am stumped already

How did they get the 3d all over 100

Thanks

 

[Deleted member 4993]

Hi Folks
I am reviewing an old calculus textbook and am stumped already

How did they get the 3d all over 100

Thanks

View attachment 30471

(2d/100) + (d/100) = 3d/100

 

[canvas]

[math]\frac{d}{50}+\frac{d}{100}=\frac{2d}{100}+\frac{d}{100}=\frac{3d}{100}[/math]

 

[Steven G]

Actually, you need to improve your arithmetic.

 

[needtoimprovemycalculus]

Actually, you need to improve your arithmetic.

Your snide comment was not necessary.
Do not ever post in one of my threads again Jomo.

 

[lookagain]

I am reviewing an old calculus textbook and am stumped already

needtoimprovemycalculus, after having that step clarified in this thread, did you follow the rest of the problem's steps to your satisfaction?

 

[topsquark]

Your snide comment was not necessary.
Do not ever post in one of my threads again Jomo.

I don't think that was intended as a snide comment. It is a fact that the most trouble people have with learning Calculus are actually troubles with the algebraic steps.

-Dan

 

[needtoimprovemycalculus]

needtoimprovemycalculus, after having that step clarified in this thread, did you follow the rest of the problem's steps to your satisfaction?

Yes

Thank You