two equivalent fractions for 5 over 15 = 1/3, 10/30
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Multiply the numerator (top) and the denominator (bottom) of the fraction by any non-zero integer or a common factor. You will have an equivalent fraction.
If doing it without a calculator, then convert each mixed fraction into a top-heavy equivalent fraction and then multiply as for fractions.
To find out if two fractions are equivalent, either reduce them both to their simplest forms (which will be the same number if they're equivalent) or convert them to decimals (which will be the same number if they're equivalent). To make an equivalent fraction of a given fraction, multiply the numerator and the denominator of the given fraction by the same counting number.
Change each fraction to an equivalent fraction with the same denominator. 3/8+5/12= 9/24+10/24=19/24
Pie charts make nice fraction diagrams. Each fraction that you subtract is equivalent to taking out a slice of pie.