Subtract 72/10 from 5/42
1st number: 5/42, 2nd number: 7 2/10
5/42 - 72/10 is -1487/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
5/42 = 5 × 5/42 × 5 = 25/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
72/10 = 72 × 21/10 × 21 = 1512/210 - Subtract the two like fractions:
25/210 - 1512/210 = 25 - 1512/210 = -1487/210
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