Add 81/7 and 12/20
1st number: 11 4/7, 2nd number: 12/20
81/7 + 12/20 is 426/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 7 × 20 = 140,
81/7 = 81 × 20/7 × 20 = 1620/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
12/20 = 12 × 7/20 × 7 = 84/140 - Add the two like fractions:
1620/140 + 84/140 = 1620 + 84/140 = 1704/140 - 1704/140 simplified gives 426/35
- So, 81/7 + 12/20 = 426/35
In mixed form: 126/35
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