Subtract 21/7 from 42/50
1st number: 42/50, 2nd number: 3 0/7
42/50 - 21/7 is -54/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 7 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 50 × 7 = 350,
42/50 = 42 × 7/50 × 7 = 294/350 - Likewise, for the 2nd fraction, since 7 × 50 = 350,
21/7 = 21 × 50/7 × 50 = 1050/350 - Subtract the two like fractions:
294/350 - 1050/350 = 294 - 1050/350 = -756/350 - After reducing the fraction, the answer is -54/25
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