Add 21/6 and 80/90
1st number: 3 3/6, 2nd number: 80/90
21/6 + 80/90 is 79/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 6 × 15 = 90,
21/6 = 21 × 15/6 × 15 = 315/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
80/90 = 80 × 1/90 × 1 = 80/90 - Add the two like fractions:
315/90 + 80/90 = 315 + 80/90 = 395/90 - 395/90 simplified gives 79/18
- So, 21/6 + 80/90 = 79/18
In mixed form: 47/18
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