Add 40/70 and 81/20
1st number: 40/70, 2nd number: 4 1/20
40/70 + 81/20 is 647/140.
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,
40/70 = 40 × 2/70 × 2 = 80/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
81/20 = 81 × 7/20 × 7 = 567/140 - Add the two like fractions:
80/140 + 567/140 = 80 + 567/140 = 647/140 - So, 40/70 + 81/20 = 647/140
In mixed form: 487/140
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