Add 28/30 and 80/21
1st number: 28/30, 2nd number: 3 17/21
28/30 + 80/21 is 166/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
28/30 = 28 × 7/30 × 7 = 196/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
80/21 = 80 × 10/21 × 10 = 800/210 - Add the two like fractions:
196/210 + 800/210 = 196 + 800/210 = 996/210 - 996/210 simplified gives 166/35
- So, 28/30 + 80/21 = 166/35
In mixed form: 426/35
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