Add 20/72 and 90/45
1st number: 20/72, 2nd number: 2 0/45
20/72 + 90/45 is 41/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
20/72 = 20 × 5/72 × 5 = 100/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
90/45 = 90 × 8/45 × 8 = 720/360 - Add the two like fractions:
100/360 + 720/360 = 100 + 720/360 = 820/360 - 820/360 simplified gives 41/18
- So, 20/72 + 90/45 = 41/18
In mixed form: 25/18
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