0
You do not need to.
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
How do you multiply like denominators fractions?
You multiply straight across. Let's take one half and two halves for example. Multiply across, and you get three quarters.
What is the difference between multiplying and dividing two rational expressions?
multiplying rational expressions means multiplying two alg. rxpressions that look like fractions, Just like normal, multiply numerators and multiply denominators then reduce. Division, just like regular fractions means to invert the divisor and the multiply (as above)
How does cross multiplying of fractions work?
There are places where this term is used. 1st- to compare fractions across an equals you are multiplying each side by the product of the denominators. It looks like you multiply the numerator of the left side times the denominator of the right and put that product on the left side. Multiply the numerator of the left times the denominator of the right and put that on the right. In algebra this is good when looking for an unknown. 2nd- when comparing fractions to see which one is bigger you can multiply up from the denominator to the other numerator and compare these numbers to see which one is bigger.
How do you simplify expressions with variables?
You multiply out brackets, remove common factors from fractions, combine like terms.
What is the rule for multiplying fractions with like denamonators?
Multiply all numerators to get numerator of the product. Multiply all denominators to get denominator of the product. This is true whether the factors have like or unlike denominators.
How do you find an area with fractions?
multiply the numerators and hte denominators like u would w/regular numbers
Can you multiply by one?
Yes. The number one is called the "multiplicative identity" because any number multiplied by 1 is the same number. This is useful in working with fractions, because you can multiply by improper fractions such as 3/3 or 5/5 to achieve like denominators.
How do you change fractions into like terms?
When the denominators of two or more fractions are the SAME, then they can be added or subtracted directly. An easy way is to multiply each denominator by the other (along with its corresponding numerator).
How do you change the fractions to like fractions?
To convert unlike fractions to like fractions, it is necessary to find the LCM of the unlike denominators. This will give you the least common denominator. Example: 1/3 and 1/8. The LCM of 3 and 8 is 24. To convert 3rds to 24ths, multiply the numerator and the denominator by 8. To convert 8ths to 24ths, multiply the numerator and the denominator by 3. 1/3 + 1/8 = 8/24 + 3/24 = 11/24
How do you perform multiplication of improper fractions?
You do it just like you do normal fractions. Multiply the top by the top and the bottom by the bottom. Remember that whole numbers can be converted into fractions by putting them over 1. For example, 7 = 7/1, 29 = 29/1.
What are like and unlike fractions?
Like fractions are the fractions which have the same denominator and unlike fractions are the fractions which do not have the same denominator.
How do you multiply fractions with like denominators?
The numerator and denominator of a product of fractions are simply the products of the numerators and denominators respectively. That is, a/b * c/d = (a*c)/(b*d). The denominators can be the same or different - that is irrelevant.
