Add 8/30 and 3/21
8/30 + 3/21 is 43/105.
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,
8/30 = 8 × 7/30 × 7 = 56/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
3/21 = 3 × 10/21 × 10 = 30/210 - Add the two like fractions:
56/210 + 30/210 = 56 + 30/210 = 86/210 - 86/210 simplified gives 43/105
- So, 8/30 + 3/21 = 43/105
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