It is: 60/84 = 5/7 in its lowest terms
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There are an infinite number of them. Here are a few: 10/14 5/7 60/84 790/1,106
equivalent fractions of 3/21 = 6/42, 9/63, 12/84,...
60/84 = 5/7
7/8, 14/16
To subtract fractions with different denominators, you first have to find the equivalent fractions that have equal denominators. In this case, you can multiply top and bottom of 5/12 by 7 to give 35/84. You can multiply top and bottom of 4/7 by 12 to give 48/84. Thus the question can be rewritten as 35/84 - 48/84. This is just a straight subtraction which gives the answer -13/84