Add 72/90 and 45/16
1st number: 72/90, 2nd number: 2 13/16
72/90 + 45/16 is 289/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
72/90 = 72 × 8/90 × 8 = 576/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
45/16 = 45 × 45/16 × 45 = 2025/720 - Add the two like fractions:
576/720 + 2025/720 = 576 + 2025/720 = 2601/720 - 2601/720 simplified gives 289/80
- So, 72/90 + 45/16 = 289/80
In mixed form: 349/80
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