Add 21/16 and 12/30
1st number: 1 5/16, 2nd number: 12/30
21/16 + 12/30 is 137/80.
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,
12/30 = 12 × 8/30 × 8 = 96/240 - Add the two like fractions:
315/240 + 96/240 = 315 + 96/240 = 411/240 - 411/240 simplified gives 137/80
- So, 21/16 + 12/30 = 137/80
In mixed form: 157/80
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