Subtract 30/7 from 12/90
1st number: 12/90, 2nd number: 4 2/7
12/90 - 30/7 is -436/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
12/90 = 12 × 7/90 × 7 = 84/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
30/7 = 30 × 90/7 × 90 = 2700/630 - Subtract the two like fractions:
84/630 - 2700/630 = 84 - 2700/630 = -2616/630 - After reducing the fraction, the answer is -436/105
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