Add 72/90 and 21/6
1st number: 72/90, 2nd number: 3 3/6
72/90 + 21/6 is 43/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 6 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 6 × 15 = 90,
21/6 = 21 × 15/6 × 15 = 315/90 - Add the two like fractions:
72/90 + 315/90 = 72 + 315/90 = 387/90 - 387/90 simplified gives 43/10
- So, 72/90 + 21/6 = 43/10
In mixed form: 43/10
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