Answer: 1. (21/10 or 2.1). 2. (3/2 or 1.5)
Explanation:
1. Let's take the first equation as an example (5 1/4 ÷ 2 1/2)
2. First, make both fractions improper (21/4, and 5/2)
3. Next, multiply the first fraction by the reciprocal (numerator and denominator swapped) of the second fraction. This is because, to keep the equation mathematically the same, we need to turn the division question into a multiplication question. In this case, it is 21/4 x 2/5 which answers 21/10, or 2.1.
4. Using the same method, we get 7/2 x 3/7, which is 3/2 (simplified), or 1.5.
I didn't want to give the answers for all the equations, but I hope this method is clear and concise for figuring out the answer for the rest of the equations.