Subtract 7/5 from 16/21
1st number: 16/21, 2nd number: 1 2/5
1621 - 75 is -67105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
1621 = 16 × 521 × 5 = 80105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
75 = 7 × 215 × 21 = 147105 - Subtract the two like fractions:
80105 - 147105 = 80 - 147105 = -67105
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