Add 5/21 and 10/30
5/21 + 10/30 is 4/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
5/21 = 5 × 10/21 × 10 = 50/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
10/30 = 10 × 7/30 × 7 = 70/210 - Add the two like fractions:
50/210 + 70/210 = 50 + 70/210 = 120/210 - 120/210 simplified gives 4/7
- So, 5/21 + 10/30 = 4/7
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