Subtract 42/20 from 72/75
1st number: 72/75, 2nd number: 2 2/20
72/75 - 42/20 is -57/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 20 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 75 × 4 = 300,
72/75 = 72 × 4/75 × 4 = 288/300 - Likewise, for the 2nd fraction, since 20 × 15 = 300,
42/20 = 42 × 15/20 × 15 = 630/300 - Subtract the two like fractions:
288/300 - 630/300 = 288 - 630/300 = -342/300 - After reducing the fraction, the answer is -57/50
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