Question

I'm stuck on an algebra equation while doing ACT prep.. help? (200/(r+10))=((200/r)-1)

Answer 1

Multiply both sides by (r+10) first.

Answer 2

I understand that but that -1 keeps confusing me

Answer 3

Multiply the whole thing. i.e \((r+10)(\frac{200}{r} - 1)\)

Answer 4

Should i first combine ((200/r)-1) as one? Which would give me ((200-r)/r) ?

Answer 5

Up to you. In this case, you want (200/r) - (r/r) for laziness.