Subtract 21/70 from 10/50
10/50 - 21/70 is -1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 70 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 50 × 7 = 350,
10/50 = 10 × 7/50 × 7 = 70/350 - Likewise, for the 2nd fraction, since 70 × 5 = 350,
21/70 = 21 × 5/70 × 5 = 105/350 - Subtract the two like fractions:
70/350 - 105/350 = 70 - 105/350 = -35/350 - After reducing the fraction, the answer is -1/10
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