Add 21/5 and 72/90
1st number: 4 1/5, 2nd number: 72/90
21/5 + 72/90 is 5/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
21/5 = 21 × 18/5 × 18 = 378/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
72/90 = 72 × 1/90 × 1 = 72/90 - Add the two like fractions:
378/90 + 72/90 = 378 + 72/90 = 450/90 - 450/90 simplified gives 5/1
- So, 21/5 + 72/90 = 5/1
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