Add 72/90 and 21/10
1st number: 72/90, 2nd number: 2 1/10
72/90 + 21/10 is 29/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 10 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 10 × 9 = 90,
21/10 = 21 × 9/10 × 9 = 189/90 - Add the two like fractions:
72/90 + 189/90 = 72 + 189/90 = 261/90 - 261/90 simplified gives 29/10
- So, 72/90 + 21/10 = 29/10
In mixed form: 29/10
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