Subtract 9/90 from 45/21
1st number: 2 3/21, 2nd number: 9/90
45/21 - 9/90 is 143/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 21 × 30 = 630,
45/21 = 45 × 30/21 × 30 = 1350/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
9/90 = 9 × 7/90 × 7 = 63/630 - Subtract the two like fractions:
1350/630 - 63/630 = 1350 - 63/630 = 1287/630 - After reducing the fraction, the answer is 143/70
- In mixed form: 23/70
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