Add 3/42 and 80/40
1st number: 3/42, 2nd number: 2 0/40
3/42 + 80/40 is 29/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 42 × 20 = 840,
3/42 = 3 × 20/42 × 20 = 60/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
80/40 = 80 × 21/40 × 21 = 1680/840 - Add the two like fractions:
60/840 + 1680/840 = 60 + 1680/840 = 1740/840 - 1740/840 simplified gives 29/14
- So, 3/42 + 80/40 = 29/14
In mixed form: 21/14
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