Add 42/45 and 21/16
1st number: 42/45, 2nd number: 1 5/16
42/45 + 21/16 is 539/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
42/45 = 42 × 16/45 × 16 = 672/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
21/16 = 21 × 45/16 × 45 = 945/720 - Add the two like fractions:
672/720 + 945/720 = 672 + 945/720 = 1617/720 - 1617/720 simplified gives 539/240
- So, 42/45 + 21/16 = 539/240
In mixed form: 259/240
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