Add 81/21 and 54/30
1st number: 3 18/21, 2nd number: 1 24/30
81/21 + 54/30 is 198/35.
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,
81/21 = 81 × 10/21 × 10 = 810/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
54/30 = 54 × 7/30 × 7 = 378/210 - Add the two like fractions:
810/210 + 378/210 = 810 + 378/210 = 1188/210 - 1188/210 simplified gives 198/35
- So, 81/21 + 54/30 = 198/35
In mixed form: 523/35
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