Add 42/35 and 7/21
1st number: 1 7/35, 2nd number: 7/21
42/35 + 7/21 is 23/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 35 × 3 = 105,
42/35 = 42 × 3/35 × 3 = 126/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
7/21 = 7 × 5/21 × 5 = 35/105 - Add the two like fractions:
126/105 + 35/105 = 126 + 35/105 = 161/105 - 161/105 simplified gives 23/15
- So, 42/35 + 7/21 = 23/15
In mixed form: 18/15
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