Add 21/80 and 70/60
1st number: 21/80, 2nd number: 1 10/60
21/80 + 70/60 is 343/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 60 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
21/80 = 21 × 3/80 × 3 = 63/240 - Likewise, for the 2nd fraction, since 60 × 4 = 240,
70/60 = 70 × 4/60 × 4 = 280/240 - Add the two like fractions:
63/240 + 280/240 = 63 + 280/240 = 343/240 - So, 21/80 + 70/60 = 343/240
In mixed form: 1103/240
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