In an hour, times 7/8, we get 52.5 minutes. And 7/8 of an hour- weĬan get our calculator out. factoring simplifying rational expressions calculator. When we flip it, itīecomes hours per lawn. Welcome to our step-by-step math solver Solve Simplify Factor Expand Graph GCF LCM. Little bit better, 15/8- so t is equal to 15 over 8 hours. In kind of a way that we can think about it a And then we have aĬommon denominator now. Thing as 3/15 plus 5/15 is going to be equal to 1/t. Their total rate, which is 1/t lawns per hour. The units here, just because it gets redundant. Together to figure out how much they can do in an hour. Free Online Equation Calculator helps you to solve linear, quadratic and polynomial systems of equations. Because in an hour he'llĭo 1/5, and he'll do 1/3. To be 1/5 of a lawn per hour plus 1/3 of an hour. Of a lawn per hour, their combined rate is going Ian and the rate of Kyandre, and the combined rate. Long they take together, then we could sayĮvery t hours, if we're assuming t is in hours. Together, how long would it take them to rakeĪnd bag the leaves? So let's let let's let t be Their combined rate? Well, they tell us that working Write it as a rate, this is 1/3 of a lawn per hour. So for Kyandre, Kyandre can,įor 1 lawn- I'll assume it's a boy's name- he Kyandre can rake the same lawnĪnd bag the leaves in 3 hours. So let me justĮrase that S right there- 1/5 of a lawn per hour. Writing it this way is more useful, because Lets try the best Combine rational expressions. It says Ian can rake a lawn andīag of the leaves in 5 hours. Combine rational expressions calculator - Apps can be a great way to help learners with their math. Lawn and bag the leaves? So let's think about If the frequency is 30 beats per minute than the period is 2 seconds per beat.īag the leaves in 5 hours. Period measures seconds per cycle and frequency measures cycles per second. In general if you have an equality you can do whatever you want to both sides as long as you do it to both and you don't do something like dividing by 0.Īs a side note, a real example of reciprocal units is period and frequency of waves. This is true since we can directly substitute B in for A because of the equality. If A=B then 1/A=1/B (assuming A and B are not 0). You could also justify taking the reciprocal by the following reasoning. As a last step we could divide both sides by 1(lawn) to get t (hours/lawn)=15/8. Next multiply both sides by 15/8 to cancel the 8/15 on the left and get t (hours)=15/8 (lawn). Next lets multiply both sides by t (hours) to cancel the t (hours) on the right and get (8/15)t (hours)=1 (lawn). One way to see it is that Sal is doing a few steps at once. This is an online calculator for solving algebraic equations.
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