Subtract 45/63 from 90/7
1st number: 12 6/7, 2nd number: 45/63
90/7 - 45/63 is 85/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
90/7 = 90 × 9/7 × 9 = 810/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
45/63 = 45 × 1/63 × 1 = 45/63 - Subtract the two like fractions:
810/63 - 45/63 = 810 - 45/63 = 765/63 - After reducing the fraction, the answer is 85/7
- In mixed form: 121/7
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