Add 21/35 and 42/20
1st number: 21/35, 2nd number: 2 2/20
21/35 + 42/20 is 27/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 35 × 4 = 140,
21/35 = 21 × 4/35 × 4 = 84/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
42/20 = 42 × 7/20 × 7 = 294/140 - Add the two like fractions:
84/140 + 294/140 = 84 + 294/140 = 378/140 - 378/140 simplified gives 27/10
- So, 21/35 + 42/20 = 27/10
In mixed form: 27/10
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