Subtract 70/20 from 25/90
1st number: 25/90, 2nd number: 3 10/20
25/90 - 70/20 is -29/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
25/90 = 25 × 2/90 × 2 = 50/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
70/20 = 70 × 9/20 × 9 = 630/180 - Subtract the two like fractions:
50/180 - 630/180 = 50 - 630/180 = -580/180 - After reducing the fraction, the answer is -29/9
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