Subtract 90/70 from 75/28
1st number: 2 19/28, 2nd number: 1 20/70
75/28 - 90/70 is 39/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
75/28 = 75 × 5/28 × 5 = 375/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
90/70 = 90 × 2/70 × 2 = 180/140 - Subtract the two like fractions:
375/140 - 180/140 = 375 - 180/140 = 195/140 - After reducing the fraction, the answer is 39/28
- In mixed form: 111/28
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