First we multiply by the LCD, rs on both sides of our equation. This gives us t on the left side and, and the quantity t plus r times r on the right side. Next we distribute the rt to these terms to get this equations. We subtract rt from both sides to get t minus rt equals r squared. Remember, we want to solve for t so let's get it on one side. I'm going to rewrite our equation up here and now we have to factor. We want to get one t out of these two terms. If we factor our t, we're left with t times 1 minus r equals r squared. Finally we divide by 1 minus r to get t is equal to r squared divided by 1 minus r. Fantastic work if you got this. Now I know this is pretty challenging so don't worry if you don't have the hang of it yet. Let's try working through a couple more and see if you pick it up.
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