Add 98/30 and 81/21
1st number: 3 8/30, 2nd number: 3 18/21
98/30 + 81/21 is 748/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
98/30 = 98 × 7/30 × 7 = 686/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
81/21 = 81 × 10/21 × 10 = 810/210 - Add the two like fractions:
686/210 + 810/210 = 686 + 810/210 = 1496/210 - 1496/210 simplified gives 748/105
- So, 98/30 + 81/21 = 748/105
In mixed form: 713/105
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