Add 45/18 and 72/30
1st number: 2 9/18, 2nd number: 2 12/30
45/18 + 72/30 is 49/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
45/18 = 45 × 5/18 × 5 = 225/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
72/30 = 72 × 3/30 × 3 = 216/90 - Add the two like fractions:
225/90 + 216/90 = 225 + 216/90 = 441/90 - 441/90 simplified gives 49/10
- So, 45/18 + 72/30 = 49/10
In mixed form: 49/10
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