Add 42/16 and 81/30
1st number: 2 10/16, 2nd number: 2 21/30
42/16 + 81/30 is 213/40.
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,
42/16 = 42 × 15/16 × 15 = 630/240 - Likewise, for the 2nd fraction, since 30 × 8 = 240,
81/30 = 81 × 8/30 × 8 = 648/240 - Add the two like fractions:
630/240 + 648/240 = 630 + 648/240 = 1278/240 - 1278/240 simplified gives 213/40
- So, 42/16 + 81/30 = 213/40
In mixed form: 513/40
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