Subtract 75/10 from 90/28
1st number: 3 6/28, 2nd number: 7 5/10
90/28 - 75/10 is -30/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 10 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
90/28 = 90 × 5/28 × 5 = 450/140 - Likewise, for the 2nd fraction, since 10 × 14 = 140,
75/10 = 75 × 14/10 × 14 = 1050/140 - Subtract the two like fractions:
450/140 - 1050/140 = 450 - 1050/140 = -600/140 - After reducing the fraction, the answer is -30/7
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