Find the equivalent fraction in the group: 3 4 , 5 7 , 15 21

Given, The fractions are 3 4 , 5 7 , 15 21 . Equivalent fractions are different fractions that equal the same number. The numerator and the denominator of a fraction must be multiplied or divided by the same non-zero whole number in order to have equivalent fractions. Let us consider the first two fractions 3 4 and 5 7 . The above fractions are not equivalent as the respective numerators and denominators are co-prime to each other. Let us now consider the fractions 5 7 and 15 21 . The above fractions are equivalent as, 5 7 = 5 × 3 7 × 3 = 15 21 Now, let us consider 3 4 and 15 21 . If we take the numerators, 15 is a multiple of 3 but 21 is not a multiple of 4 . Hence, the required group is 5 7 and 15 21 .

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START UP MATHEMATICS>Chapter 7 - Fractions>REVIEW EXERCISES>Q 1

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Fractions having different denominators are called (like / unlike) fractions.

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Important Questions on Fractions

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START UP MATHEMATICS>Chapter 7 - Fractions>REVIEW EXERCISES>Q 2

Two fractions are _____ If the product of the numerator of the first and the denominator of the second is equal to the product of the denominator of the first and the numerator of the second.