Subtract 70/63 from 90/27
1st number: 3 9/27, 2nd number: 1 7/63
90/27 - 70/63 is 20/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 63 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
90/27 = 90 × 7/27 × 7 = 630/189 - Likewise, for the 2nd fraction, since 63 × 3 = 189,
70/63 = 70 × 3/63 × 3 = 210/189 - Subtract the two like fractions:
630/189 - 210/189 = 630 - 210/189 = 420/189 - After reducing the fraction, the answer is 20/9
- In mixed form: 22/9
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