adding fractions
6/20
44
Negative 15 minus 5 can be solved by subtracting 5 from -15. This results in -20, as subtracting a positive number from a negative number increases the magnitude of the negative value. In mathematical terms, -15 - 5 = -20.
3/20
Examples of fractions that are equal to 15/20 are 3/4, 6/8, 9/12.
Say you have 5 and 1/10 and you have to add 6 and 3/20, you add the whole numbers, (11) and then convert the 10 of 1/10 to 20 (20/10 is 2), then you have to multiply the 1 by 2 to get 2/20 (equivalent fraction of 1/10). Now you can add the fractions, i.e. 4/20 (or simplified, 1/5). Final answer is 11 and 1/5
I'll make up an example problem; 2 3/5 - 1 1/4. First get your terms into fraction form 2 3/5 = 13/5 and 1 1/4 = 5/4 so our problem becomes 13/5-5/4 next find the least common denominator ( in this case 20 ) 52/20 - 25/20 = 27/20 then simplify 27/20 = 1 7/20
200/8 and 2020/808 are two examples.
150/200 and 150000/200000 are two examples.
200/900, 100/450, 22/99 are some examples.
4-20 an equivalent fractions = -16
Because subtracting a negative number is the same as adding a positive number. Subtracting -20 is the same as adding +20. 31 - (-20) = 31 + 20 = 51
460.00 - 20% = 368.00
fractions of 20 = 20/1, 40/2, 60/3, 80/4,...
When adding or subtracting fractions where the denominators are different. Convert the fractions to a common denominator. Sometimes it is possible to operate on the integers separately to the fraction part but it is good practice to convert mixed numbers into improper fractions. 3²/₅ - 1¼ = 17/5 - 5/4 The common denominator of 5 and 4 is 20. (4 x 17) - (5 x 5) ÷ 20 = (68 - 25) ÷ 20 = 43/20 This can be converted to the mixed number 2 and 3/20
The Least (or Lowest) Common Multiple (LCM) is the smallest number that is a multiple of both numbers. For example: the LCM of 10 and 4 is 20, because both 10 and 4 go into 20 and 20 is the smallest number both 10 and 4 can go into. To be able to add or subtract fractions they must have the same denominator. If the denominators are different then the fractions must first be converted into equivalent fractions with a common denominator; any common denominator can be used, but by using the Least Common Multiple of the denominators as the new denominator it keeps the numbers smaller; this smallest denominator is known as the Least Common Denominator Thus the Least Common Denominator is the Least Common Multiple of the denominators of two (or more) fractions (used when adding or subtracting fractions with different denominators). As the Least Common Multiple is used most often with adding or subtracting fractions, it is often referred to as the Least Common Denominator (because the numbers being considered are usually denominators of fractions).