Add 21/15 and 42/49
1st number: 1 6/15, 2nd number: 42/49
21/15 + 42/49 is 79/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 49 is 735
Next, find the equivalent fraction of both fractional numbers with denominator 735 - For the 1st fraction, since 15 × 49 = 735,
21/15 = 21 × 49/15 × 49 = 1029/735 - Likewise, for the 2nd fraction, since 49 × 15 = 735,
42/49 = 42 × 15/49 × 15 = 630/735 - Add the two like fractions:
1029/735 + 630/735 = 1029 + 630/735 = 1659/735 - 1659/735 simplified gives 79/35
- So, 21/15 + 42/49 = 79/35
In mixed form: 29/35
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