Add 21/16 and 54/30
1st number: 1 5/16, 2nd number: 1 24/30
21/16 + 54/30 is 249/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 30 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 16 × 15 = 240,
21/16 = 21 × 15/16 × 15 = 315/240 - Likewise, for the 2nd fraction, since 30 × 8 = 240,
54/30 = 54 × 8/30 × 8 = 432/240 - Add the two like fractions:
315/240 + 432/240 = 315 + 432/240 = 747/240 - 747/240 simplified gives 249/80
- So, 21/16 + 54/30 = 249/80
In mixed form: 39/80
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