Subtract 81/72 from 42/10
1st number: 4 2/10, 2nd number: 1 9/72
42/10 - 81/72 is 123/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 10 × 36 = 360,
42/10 = 42 × 36/10 × 36 = 1512/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
81/72 = 81 × 5/72 × 5 = 405/360 - Subtract the two like fractions:
1512/360 - 405/360 = 1512 - 405/360 = 1107/360 - After reducing the fraction, the answer is 123/40
- In mixed form: 33/40
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