Add 28/30 and 2/21
28/30 + 2/21 is 36/35.
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,
2/21 = 2 × 10/21 × 10 = 20/210 - Add the two like fractions:
196/210 + 20/210 = 196 + 20/210 = 216/210 - 216/210 simplified gives 36/35
- So, 28/30 + 2/21 = 36/35
In mixed form: 11/35
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