Add 15/4 and 81/70
1st number: 3 3/4, 2nd number: 1 11/70
15/4 + 81/70 is 687/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 4 × 35 = 140,
15/4 = 15 × 35/4 × 35 = 525/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
81/70 = 81 × 2/70 × 2 = 162/140 - Add the two like fractions:
525/140 + 162/140 = 525 + 162/140 = 687/140 - So, 15/4 + 81/70 = 687/140
In mixed form: 4127/140
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