Subtract 70/45 from 21/2
1st number: 10 1/2, 2nd number: 1 25/45
21/2 - 70/45 is 161/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
21/2 = 21 × 45/2 × 45 = 945/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
70/45 = 70 × 2/45 × 2 = 140/90 - Subtract the two like fractions:
945/90 - 140/90 = 945 - 140/90 = 805/90 - After reducing the fraction, the answer is 161/18
- In mixed form: 817/18
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