Add 20/45 and 42/16
1st number: 20/45, 2nd number: 2 10/16
20/45 + 42/16 is 221/72.
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,
20/45 = 20 × 16/45 × 16 = 320/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
42/16 = 42 × 45/16 × 45 = 1890/720 - Add the two like fractions:
320/720 + 1890/720 = 320 + 1890/720 = 2210/720 - 2210/720 simplified gives 221/72
- So, 20/45 + 42/16 = 221/72
In mixed form: 35/72
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