Add 81/30 and 63/70
1st number: 2 21/30, 2nd number: 63/70
81/30 + 63/70 is 18/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
81/30 = 81 × 7/30 × 7 = 567/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
63/70 = 63 × 3/70 × 3 = 189/210 - Add the two like fractions:
567/210 + 189/210 = 567 + 189/210 = 756/210 - 756/210 simplified gives 18/5
- So, 81/30 + 63/70 = 18/5
In mixed form: 33/5
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