Add 54/7 and 81/30
1st number: 7 5/7, 2nd number: 2 21/30
54/7 + 81/30 is 729/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 7 × 30 = 210,
54/7 = 54 × 30/7 × 30 = 1620/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
81/30 = 81 × 7/30 × 7 = 567/210 - Add the two like fractions:
1620/210 + 567/210 = 1620 + 567/210 = 2187/210 - 2187/210 simplified gives 729/70
- So, 54/7 + 81/30 = 729/70
In mixed form: 1029/70
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