Subtract 70/72 from 30/20
1st number: 1 10/20, 2nd number: 70/72
30/20 - 70/72 is 19/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 20 × 18 = 360,
30/20 = 30 × 18/20 × 18 = 540/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
70/72 = 70 × 5/72 × 5 = 350/360 - Subtract the two like fractions:
540/360 - 350/360 = 540 - 350/360 = 190/360 - After reducing the fraction, the answer is 19/36
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