Add 7/70 and 81/20
1st number: 7/70, 2nd number: 4 1/20
7/70 + 81/20 is 83/20.
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,
7/70 = 7 × 2/70 × 2 = 14/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
81/20 = 81 × 7/20 × 7 = 567/140 - Add the two like fractions:
14/140 + 567/140 = 14 + 567/140 = 581/140 - 581/140 simplified gives 83/20
- So, 7/70 + 81/20 = 83/20
In mixed form: 43/20
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