Add 72/90 and 18/5
1st number: 72/90, 2nd number: 3 3/5
72/90 + 18/5 is 22/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 5 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 5 × 18 = 90,
18/5 = 18 × 18/5 × 18 = 324/90 - Add the two like fractions:
72/90 + 324/90 = 72 + 324/90 = 396/90 - 396/90 simplified gives 22/5
- So, 72/90 + 18/5 = 22/5
In mixed form: 42/5
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