# subtractions and fractions

Anonymous

Question description

how do you subtract fractions.  need step by step instuctions

In order to subtract fractions, you must have the same denominator (bottom number)

Example:

3/4 + 1/2

Common denominator is 4

3/4 + 2/4 = 5/4 or 1-1/4

1/2 * 2/2 = 2/4  (1/2 and 2/4 are equivalant - they are equal - only the 1/2 is multiplied by 2 on top and bottom)

Second Example:

2/3 + 1/6

Common denominator is 6

2/3 * 2/2 = 4/6

4/6 + 1/6 = 5/6

Third Example:

2/5 + 3/15

Common denominator is 15

2/5 * 3/3 = 6/15

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