Add 42/21 and 25/28
1st number: 2 0/21, 2nd number: 25/28
42/21 + 25/28 is 81/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
42/21 = 42 × 4/21 × 4 = 168/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
25/28 = 25 × 3/28 × 3 = 75/84 - Add the two like fractions:
168/84 + 75/84 = 168 + 75/84 = 243/84 - 243/84 simplified gives 81/28
- So, 42/21 + 25/28 = 81/28
In mixed form: 225/28
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