Add 80/40 and 9/42
1st number: 2 0/40, 2nd number: 9/42
80/40 + 9/42 is 31/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 42 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
80/40 = 80 × 21/40 × 21 = 1680/840 - Likewise, for the 2nd fraction, since 42 × 20 = 840,
9/42 = 9 × 20/42 × 20 = 180/840 - Add the two like fractions:
1680/840 + 180/840 = 1680 + 180/840 = 1860/840 - 1860/840 simplified gives 31/14
- So, 80/40 + 9/42 = 31/14
In mixed form: 23/14
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