Add 72/90 and 18/15
1st number: 72/90, 2nd number: 1 3/15
72/90 + 18/15 is 2/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
72/90 = 72 × 1/90 × 1 = 72/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
18/15 = 18 × 6/15 × 6 = 108/90 - Add the two like fractions:
72/90 + 108/90 = 72 + 108/90 = 180/90 - 180/90 simplified gives 2/1
- So, 72/90 + 18/15 = 2/1
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