Add 72/18 and 9/45
1st number: 4 0/18, 2nd number: 9/45
72/18 + 9/45 is 21/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
72/18 = 72 × 5/18 × 5 = 360/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
9/45 = 9 × 2/45 × 2 = 18/90 - Add the two like fractions:
360/90 + 18/90 = 360 + 18/90 = 378/90 - 378/90 simplified gives 21/5
- So, 72/18 + 9/45 = 21/5
In mixed form: 41/5
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