Add 42/21 and 21/56
1st number: 2 0/21, 2nd number: 21/56
42/21 + 21/56 is 19/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
42/21 = 42 × 8/21 × 8 = 336/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
21/56 = 21 × 3/56 × 3 = 63/168 - Add the two like fractions:
336/168 + 63/168 = 336 + 63/168 = 399/168 - 399/168 simplified gives 19/8
- So, 42/21 + 21/56 = 19/8
In mixed form: 23/8
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