1) Analyze the following problems. In which cases do you need to find a common denominator and in which cases could you cross multiply to find an answer? Explain your thinking.
a) Add. \(\Large \frac{3}{4}+\frac{2}{3}\)
b) Subtract. \(\Large \frac{2}{3}-\frac{x}{5}\)
c) Multiply. \(\Large \frac{3}{4}\cdot{\frac{4}{x}}\)
d) Divide. \(\Large \frac{7}{12}\div{\frac{1}{3}}\)
e) Solve. \(\Large \frac{2}{x}=\frac{4}{6}\)
