Add 80/40 and 1/21
1st number: 2 0/40, 2nd number: 1/21
80/40 + 1/21 is 43/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 21 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 21 × 40 = 840,
1/21 = 1 × 40/21 × 40 = 40/840 - Add the two like fractions:
1680/840 + 40/840 = 1680 + 40/840 = 1720/840 - 1720/840 simplified gives 43/21
- So, 80/40 + 1/21 = 43/21
In mixed form: 21/21
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