Subtract 9/42 from 30/60
30/60 - 9/42 is 2/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
30/60 = 30 × 7/60 × 7 = 210/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
9/42 = 9 × 10/42 × 10 = 90/420 - Subtract the two like fractions:
210/420 - 90/420 = 210 - 90/420 = 120/420 - After reducing the fraction, the answer is 2/7
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