The Least Common Multiple (LCM) for 7 14 10 is 70.
The denominator of 3/4 is 4 The denominator of 7/10 is 10 4 and 10 are not the same number so the two fractions are said to have unlike denominators.
Only 1.
5 - 2 3/10 = 2 7/10 (two and 7 tenths) 5 - 2 3/10 = 2 7/10 Change the 5 to 4 10/10. Subtract the whole numbers. 4-2=2 Subtract the numerators (top numbers) of the fractions, checking first to make sure they have common denominators (bottom numbers), which they do (both denominators are 10) 10-3=7 After subtracting the numerators, put that result on top of the common denominator. 7/10 Combine the whole number result with the fraction result. 2 7/10 or written as a decimal is 2.7
8/9, 5/12, 6/7
The Least Common Multiple (LCM) for 7 14 10 is 70.
30
50
28
The Least Common Denominator (or LCD) is the Least Common Multiple (LCM) of the denominators of a pair of fractions. I assume the 7 and 21 are the denominators of two fractions you need to add or subtract.LCD(7, 21) = 21.
The denominator of 3/4 is 4 The denominator of 7/10 is 10 4 and 10 are not the same number so the two fractions are said to have unlike denominators.
Only 1.
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.
5 - 2 3/10 = 2 7/10 (two and 7 tenths) 5 - 2 3/10 = 2 7/10 Change the 5 to 4 10/10. Subtract the whole numbers. 4-2=2 Subtract the numerators (top numbers) of the fractions, checking first to make sure they have common denominators (bottom numbers), which they do (both denominators are 10) 10-3=7 After subtracting the numerators, put that result on top of the common denominator. 7/10 Combine the whole number result with the fraction result. 2 7/10 or written as a decimal is 2.7
They are not fractions, so they do not have denominators.
8/9, 5/12, 6/7
1/7+1/3 first get common denominators 3/21+7/21 add the numerators 10/21