Add 21/3 and 42/80
1st number: 7 0/3, 2nd number: 42/80
21/3 + 42/80 is 301/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 3 × 80 = 240,
21/3 = 21 × 80/3 × 80 = 1680/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
42/80 = 42 × 3/80 × 3 = 126/240 - Add the two like fractions:
1680/240 + 126/240 = 1680 + 126/240 = 1806/240 - 1806/240 simplified gives 301/40
- So, 21/3 + 42/80 = 301/40
In mixed form: 721/40
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