Subtract 70/7 from 30/9
1st number: 3 3/9, 2nd number: 10 0/7
30/9 - 70/7 is -20/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
30/9 = 30 × 7/9 × 7 = 210/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
70/7 = 70 × 9/7 × 9 = 630/63 - Subtract the two like fractions:
210/63 - 630/63 = 210 - 630/63 = -420/63 - After reducing the fraction, the answer is -20/3
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