Subtract 80/70 from 90/54
1st number: 1 36/54, 2nd number: 1 10/70
90/54 - 80/70 is 11/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 70 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 54 × 35 = 1890,
90/54 = 90 × 35/54 × 35 = 3150/1890 - Likewise, for the 2nd fraction, since 70 × 27 = 1890,
80/70 = 80 × 27/70 × 27 = 2160/1890 - Subtract the two like fractions:
3150/1890 - 2160/1890 = 3150 - 2160/1890 = 990/1890 - After reducing the fraction, the answer is 11/21
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