Subtract 18/7 from 20/4
1st number: 5 0/4, 2nd number: 2 4/7
20/4 - 18/7 is 17/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
20/4 = 20 × 7/4 × 7 = 140/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
18/7 = 18 × 4/7 × 4 = 72/28 - Subtract the two like fractions:
140/28 - 72/28 = 140 - 72/28 = 68/28 - After reducing the fraction, the answer is 17/7
- In mixed form: 23/7
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