Subtract 20/90 from 7/4
1st number: 1 3/4, 2nd number: 20/90
7/4 - 20/90 is 55/36.
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,
7/4 = 7 × 45/4 × 45 = 315/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
20/90 = 20 × 2/90 × 2 = 40/180 - Subtract the two like fractions:
315/180 - 40/180 = 315 - 40/180 = 275/180 - After reducing the fraction, the answer is 55/36
- In mixed form: 119/36
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