Practice problem
Which of the following would always create a fraction equivalent to mn\frac{m}{n}nm?
mn+mn\frac{m}{n}+\frac{m}{n}nm+nm
mn×22\frac{m}{n} \times \frac{2}{2}nm×22
mn÷2\frac{m}{n} \div 2nm÷2
mn+nm\frac{m}{n}+\frac{n}{m}nm+mn
Type a concept, like “slope” or “photosynthesis”.
