Example 7/9 - 2/5 1. Make denominators the same (they're the bottom bits) 7/9*5/5 = 35/45 2/5*9/9 = 18/45 2. Now they're the same 35/45 - 18/45 = 17/45
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If their denominators are different then find their lowest common denominator by means of their lowest common multiple remembering to adjust their numerators accordingly before adding or subtracting.
3 1/2=3 3/6=2 6/6+1 5/6=1 1/6 is the final answer - 1 5/6=1 5/6
similar fraction is the same denominator and dissimilar fraction is cannot the same denominators
A dissimilar fraction is a fraction where the denominator is not the same as the others .
Dissimilar fractions have different denominators as in the following examples 1/2, 3/5 and 7/8