Subtract 30/20 from 40/72
1st number: 40/72, 2nd number: 1 10/20
40/72 - 30/20 is -17/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 20 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
40/72 = 40 × 5/72 × 5 = 200/360 - Likewise, for the 2nd fraction, since 20 × 18 = 360,
30/20 = 30 × 18/20 × 18 = 540/360 - Subtract the two like fractions:
200/360 - 540/360 = 200 - 540/360 = -340/360 - After reducing the fraction, the answer is -17/18
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