Subtract 45/90 from 72/4
1st number: 18 0/4, 2nd number: 45/90
72/4 - 45/90 is 35/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
72/4 = 72 × 45/4 × 45 = 3240/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
45/90 = 45 × 2/90 × 2 = 90/180 - Subtract the two like fractions:
3240/180 - 90/180 = 3240 - 90/180 = 3150/180 - After reducing the fraction, the answer is 35/2
- In mixed form: 171/2
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