Subtract 35/90 from 21/35
21/35 - 35/90 is 19/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 35 × 18 = 630,
21/35 = 21 × 18/35 × 18 = 378/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
35/90 = 35 × 7/90 × 7 = 245/630 - Subtract the two like fractions:
378/630 - 245/630 = 378 - 245/630 = 133/630 - After reducing the fraction, the answer is 19/90
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