Add 21/35 and 63/70
21/35 + 63/70 is 3/2.
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,
63/70 = 63 × 1/70 × 1 = 63/70 - Add the two like fractions:
42/70 + 63/70 = 42 + 63/70 = 105/70 - 105/70 simplified gives 3/2
- So, 21/35 + 63/70 = 3/2
In mixed form: 11/2
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