You need at least two denominators to find something in common between them.
To add fractions one must have common denominators. 10 looks good here 3/10 + 2*4/2*5 3/10 + 8/10 = 11/10 ---------------
You use them when there are 2 fractions with different denominators.
Common multiples and common denominators can be found using the same process. They differ in their function. Common denominators are common multiples that are functioning as denominators.
24
2/5 = 0.4
That's a common denominator.
The least common denominator is the least common multiple of the denominators.
As a decimal 2/5 = 0.4
It is: 2/5 of 40 = 16
multiply the denominators
The GCF of 150 and 225 is 75. 150/225 = 2/3 To find a common denominator, you need at least two denominators.
To add fractions w/ common denominators, like 2/5 + 1/5, you must ONLY add the numerator, or the top numeral.