Subtract 3/45 from 70/20
1st number: 3 10/20, 2nd number: 3/45
70/20 - 3/45 is 103/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 45 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 45 × 4 = 180,
3/45 = 3 × 4/45 × 4 = 12/180 - Subtract the two like fractions:
630/180 - 12/180 = 630 - 12/180 = 618/180 - After reducing the fraction, the answer is 103/30
- In mixed form: 313/30
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