Add 81/7 and 25/20
1st number: 11 4/7, 2nd number: 1 5/20
81/7 + 25/20 is 359/28.
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,
25/20 = 25 × 7/20 × 7 = 175/140 - Add the two like fractions:
1620/140 + 175/140 = 1620 + 175/140 = 1795/140 - 1795/140 simplified gives 359/28
- So, 81/7 + 25/20 = 359/28
In mixed form: 1223/28
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