Add 42/20 and 81/70
1st number: 2 2/20, 2nd number: 1 11/70
42/20 + 81/70 is 114/35.
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,
42/20 = 42 × 7/20 × 7 = 294/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
81/70 = 81 × 2/70 × 2 = 162/140 - Add the two like fractions:
294/140 + 162/140 = 294 + 162/140 = 456/140 - 456/140 simplified gives 114/35
- So, 42/20 + 81/70 = 114/35
In mixed form: 39/35
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