Subtract 90/36 from 72/45
1st number: 1 27/45, 2nd number: 2 18/36
72/45 - 90/36 is -9/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
72/45 = 72 × 4/45 × 4 = 288/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
90/36 = 90 × 5/36 × 5 = 450/180 - Subtract the two like fractions:
288/180 - 450/180 = 288 - 450/180 = -162/180 - After reducing the fraction, the answer is -9/10
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Related: 72/90-90/36 72/45-90/72