Subtract 21/45 from 70/10
1st number: 7 0/10, 2nd number: 21/45
70/10 - 21/45 is 98/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
70/10 = 70 × 9/10 × 9 = 630/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90 - Subtract the two like fractions:
630/90 - 42/90 = 630 - 42/90 = 588/90 - After reducing the fraction, the answer is 98/15
- In mixed form: 68/15
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