Add 20/45 and 72/16
1st number: 20/45, 2nd number: 4 8/16
20/45 + 72/16 is 89/18.
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,
72/16 = 72 × 45/16 × 45 = 3240/720 - Add the two like fractions:
320/720 + 3240/720 = 320 + 3240/720 = 3560/720 - 3560/720 simplified gives 89/18
- So, 20/45 + 72/16 = 89/18
In mixed form: 417/18
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