Add 8/20 and 9/42
8/20 + 9/42 is 43/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
8/20 = 8 × 21/20 × 21 = 168/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
9/42 = 9 × 10/42 × 10 = 90/420 - Add the two like fractions:
168/420 + 90/420 = 168 + 90/420 = 258/420 - 258/420 simplified gives 43/70
- So, 8/20 + 9/42 = 43/70
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