Subtract 3/90 from 72/35
1st number: 2 2/35, 2nd number: 3/90
72/35 - 3/90 is 85/42.
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,
72/35 = 72 × 18/35 × 18 = 1296/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
3/90 = 3 × 7/90 × 7 = 21/630 - Subtract the two like fractions:
1296/630 - 21/630 = 1296 - 21/630 = 1275/630 - After reducing the fraction, the answer is 85/42
- In mixed form: 21/42
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