Subtract 21/40 from 84/9
1st number: 9 3/9, 2nd number: 21/40
84/9 - 21/40 is 1057/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 9 × 40 = 360,
84/9 = 84 × 40/9 × 40 = 3360/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
21/40 = 21 × 9/40 × 9 = 189/360 - Subtract the two like fractions:
3360/360 - 189/360 = 3360 - 189/360 = 3171/360 - After reducing the fraction, the answer is 1057/120
- In mixed form: 897/120
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