Subtract 3/48 from 21/70
21/70 - 3/48 is 19/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 48 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 70 × 24 = 1680,
21/70 = 21 × 24/70 × 24 = 504/1680 - Likewise, for the 2nd fraction, since 48 × 35 = 1680,
3/48 = 3 × 35/48 × 35 = 105/1680 - Subtract the two like fractions:
504/1680 - 105/1680 = 504 - 105/1680 = 399/1680 - After reducing the fraction, the answer is 19/80
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