Add 63/70 and 81/60
1st number: 63/70, 2nd number: 1 21/60
63/70 + 81/60 is 9/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
63/70 = 63 × 6/70 × 6 = 378/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
81/60 = 81 × 7/60 × 7 = 567/420 - Add the two like fractions:
378/420 + 567/420 = 378 + 567/420 = 945/420 - 945/420 simplified gives 9/4
- So, 63/70 + 81/60 = 9/4
In mixed form: 21/4
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