1. What is the inherent meaning and justification of cross multiplication as it applies to solving an equality?
2. Is | x -2 | the same as | 2 - x |? Please explain your answer.
3. How do you express the following mathematically?
a. y is at least 3
b. y is more than 3
c. y is at most 3
d. y is less than 3
1. What is the inherent meaning and justification of cross-multiplication as it applies to solving an equality?
When you cross-multiply, you're really multiplying each side by n/n,
where n is the denominator of the other side:
- = -
a d c b
- * - = - * -
b d d b
Note that this ...
Operations and inequalities are investigated. The solution is detailed and well presented.