Add 81/70 and 4/20
1st number: 1 11/70, 2nd number: 4/20
81/70 + 4/20 is 19/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
81/70 = 81 × 2/70 × 2 = 162/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
4/20 = 4 × 7/20 × 7 = 28/140 - Add the two like fractions:
162/140 + 28/140 = 162 + 28/140 = 190/140 - 190/140 simplified gives 19/14
- So, 81/70 + 4/20 = 19/14
In mixed form: 15/14
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