Add 27/20 and 42/70
1st number: 1 7/20, 2nd number: 42/70
27/20 + 42/70 is 39/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
27/20 = 27 × 7/20 × 7 = 189/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
42/70 = 42 × 2/70 × 2 = 84/140 - Add the two like fractions:
189/140 + 84/140 = 189 + 84/140 = 273/140 - 273/140 simplified gives 39/20
- So, 27/20 + 42/70 = 39/20
In mixed form: 119/20
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