Add 54/21 and 20/80
1st number: 2 12/21, 2nd number: 20/80
54/21 + 20/80 is 79/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 21 × 80 = 1680,
54/21 = 54 × 80/21 × 80 = 4320/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
20/80 = 20 × 21/80 × 21 = 420/1680 - Add the two like fractions:
4320/1680 + 420/1680 = 4320 + 420/1680 = 4740/1680 - 4740/1680 simplified gives 79/28
- So, 54/21 + 20/80 = 79/28
In mixed form: 223/28
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