Add 42/30 and 21/16
1st number: 1 12/30, 2nd number: 1 5/16
42/30 + 21/16 is 217/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 16 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 30 × 8 = 240,
42/30 = 42 × 8/30 × 8 = 336/240 - Likewise, for the 2nd fraction, since 16 × 15 = 240,
21/16 = 21 × 15/16 × 15 = 315/240 - Add the two like fractions:
336/240 + 315/240 = 336 + 315/240 = 651/240 - 651/240 simplified gives 217/80
- So, 42/30 + 21/16 = 217/80
In mixed form: 257/80
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