Add 12/21 and 98/30
1st number: 12/21, 2nd number: 3 8/30
12/21 + 98/30 is 403/105.
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,
12/21 = 12 × 10/21 × 10 = 120/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
98/30 = 98 × 7/30 × 7 = 686/210 - Add the two like fractions:
120/210 + 686/210 = 120 + 686/210 = 806/210 - 806/210 simplified gives 403/105
- So, 12/21 + 98/30 = 403/105
In mixed form: 388/105
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