Add 90/72 and 20/45
1st number: 1 18/72, 2nd number: 20/45
90/72 + 20/45 is 61/36.
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,
90/72 = 90 × 5/72 × 5 = 450/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
20/45 = 20 × 8/45 × 8 = 160/360 - Add the two like fractions:
450/360 + 160/360 = 450 + 160/360 = 610/360 - 610/360 simplified gives 61/36
- So, 90/72 + 20/45 = 61/36
In mixed form: 125/36
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