Add 63/70 and 21/28
63/70 + 21/28 is 33/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
63/70 = 63 × 2/70 × 2 = 126/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
21/28 = 21 × 5/28 × 5 = 105/140 - Add the two like fractions:
126/140 + 105/140 = 126 + 105/140 = 231/140 - 231/140 simplified gives 33/20
- So, 63/70 + 21/28 = 33/20
In mixed form: 113/20
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