Subtract 9/40 from 72/10
1st number: 7 2/10, 2nd number: 9/40
72/10 - 9/40 is 279/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 10 × 4 = 40,
72/10 = 72 × 4/10 × 4 = 288/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
9/40 = 9 × 1/40 × 1 = 9/40 - Subtract the two like fractions:
288/40 - 9/40 = 288 - 9/40 = 279/40 - In mixed form: 639/40
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