Subtract 28/50 from 42/84
42/84 - 28/50 is -3/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 50 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 84 × 25 = 2100,
42/84 = 42 × 25/84 × 25 = 1050/2100 - Likewise, for the 2nd fraction, since 50 × 42 = 2100,
28/50 = 28 × 42/50 × 42 = 1176/2100 - Subtract the two like fractions:
1050/2100 - 1176/2100 = 1050 - 1176/2100 = -126/2100 - After reducing the fraction, the answer is -3/50
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