Subtract 21/36 from 70/40
1st number: 1 30/40, 2nd number: 21/36
70/40 - 21/36 is 7/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 36 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
70/40 = 70 × 9/40 × 9 = 630/360 - Likewise, for the 2nd fraction, since 36 × 10 = 360,
21/36 = 21 × 10/36 × 10 = 210/360 - Subtract the two like fractions:
630/360 - 210/360 = 630 - 210/360 = 420/360 - After reducing the fraction, the answer is 7/6
- In mixed form: 11/6
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