Subtract 72/7 from 90/5
1st number: 18 0/5, 2nd number: 10 2/7
90/5 - 72/7 is 54/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 7 is 35
Next, find the equivalent fraction of both fractional numbers with denominator 35 - For the 1st fraction, since 5 × 7 = 35,
90/5 = 90 × 7/5 × 7 = 630/35 - Likewise, for the 2nd fraction, since 7 × 5 = 35,
72/7 = 72 × 5/7 × 5 = 360/35 - Subtract the two like fractions:
630/35 - 360/35 = 630 - 360/35 = 270/35 - After reducing the fraction, the answer is 54/7
- In mixed form: 75/7
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