Subtract 4/90 from 70/20
1st number: 3 10/20, 2nd number: 4/90
70/20 - 4/90 is 311/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
70/20 = 70 × 9/20 × 9 = 630/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
4/90 = 4 × 2/90 × 2 = 8/180 - Subtract the two like fractions:
630/180 - 8/180 = 630 - 8/180 = 622/180 - After reducing the fraction, the answer is 311/90
- In mixed form: 341/90
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