Add 20/30 and 8/28
20/30 + 8/28 is 20/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
20/30 = 20 × 14/30 × 14 = 280/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
8/28 = 8 × 15/28 × 15 = 120/420 - Add the two like fractions:
280/420 + 120/420 = 280 + 120/420 = 400/420 - 400/420 simplified gives 20/21
- So, 20/30 + 8/28 = 20/21
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