Add 21/35 and 42/70
21/35 + 42/70 is 6/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 35 × 2 = 70,
21/35 = 21 × 2/35 × 2 = 42/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
42/70 = 42 × 1/70 × 1 = 42/70 - Add the two like fractions:
42/70 + 42/70 = 42 + 42/70 = 84/70 - 84/70 simplified gives 6/5
- So, 21/35 + 42/70 = 6/5
In mixed form: 11/5
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