Subtract 9/42 from 16/20
16/20 - 9/42 is 41/70.
Steps for subtracting 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,
16/20 = 16 × 21/20 × 21 = 336/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
9/42 = 9 × 10/42 × 10 = 90/420 - Subtract the two like fractions:
336/420 - 90/420 = 336 - 90/420 = 246/420 - After reducing the fraction, the answer is 41/70
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