Subtract 84/45 from 90/60
1st number: 1 30/60, 2nd number: 1 39/45
90/60 - 84/45 is -11/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
90/60 = 90 × 3/60 × 3 = 270/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
84/45 = 84 × 4/45 × 4 = 336/180 - Subtract the two like fractions:
270/180 - 336/180 = 270 - 336/180 = -66/180 - After reducing the fraction, the answer is -11/30
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Related: 90/60-84/90