Add 9/21 and 81/30
1st number: 9/21, 2nd number: 2 21/30
9/21 + 81/30 is 219/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
9/21 = 9 × 10/21 × 10 = 90/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
81/30 = 81 × 7/30 × 7 = 567/210 - Add the two like fractions:
90/210 + 567/210 = 90 + 567/210 = 657/210 - 657/210 simplified gives 219/70
- So, 9/21 + 81/30 = 219/70
In mixed form: 39/70
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