Subtract 72/54 from 45/70
1st number: 45/70, 2nd number: 1 18/54
45/70 - 72/54 is -29/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 54 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 70 × 27 = 1890,
45/70 = 45 × 27/70 × 27 = 1215/1890 - Likewise, for the 2nd fraction, since 54 × 35 = 1890,
72/54 = 72 × 35/54 × 35 = 2520/1890 - Subtract the two like fractions:
1215/1890 - 2520/1890 = 1215 - 2520/1890 = -1305/1890 - After reducing the fraction, the answer is -29/42
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Related: 90/70-72/54