Subtract 21/5 from 54/70
1st number: 54/70, 2nd number: 4 1/5
54/70 - 21/5 is -24/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 5 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
54/70 = 54 × 1/70 × 1 = 54/70 - Likewise, for the 2nd fraction, since 5 × 14 = 70,
21/5 = 21 × 14/5 × 14 = 294/70 - Subtract the two like fractions:
54/70 - 294/70 = 54 - 294/70 = -240/70 - After reducing the fraction, the answer is -24/7
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