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Chapter 7: Problem 4
Multiply as indicated. $$\frac{x}{5} \cdot \frac{30}{x-4}$$
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Add or subtract as indicated. Simplify the result, if possible. $$\frac{3}{y+1}+\frac{2}{3 y}$$
If you can do a job in 6 hours and your friend can do the same job in 3 hours, explain how to find how long it takes to complete the job working together. It is not necessary to solve the problem.
perform the indicated operation or operations. Simplify the result, if possible. $$\frac{2 y}{y-5}-\left(\frac{2}{y-5}+\frac{y-2}{y-5}\right)$$
If you know how many hours it takes for you to do a job, explain how to find the fractional part of the job you can complete in \(x\) hours.
Add or subtract as indicated. Simplify the result, if possible. $$\frac{x+3}{2}+\frac{x+5}{4}$$
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