Subtract 21/90 from 63/35
1st number: 1 28/35, 2nd number: 21/90
63/35 - 21/90 is 47/30.
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,
63/35 = 63 × 18/35 × 18 = 1134/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
21/90 = 21 × 7/90 × 7 = 147/630 - Subtract the two like fractions:
1134/630 - 147/630 = 1134 - 147/630 = 987/630 - After reducing the fraction, the answer is 47/30
- In mixed form: 117/30
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