Subtract 84/42 from 10/90
1st number: 10/90, 2nd number: 2 0/42
10/90 - 84/42 is -17/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
10/90 = 10 × 7/90 × 7 = 70/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
84/42 = 84 × 15/42 × 15 = 1260/630 - Subtract the two like fractions:
70/630 - 1260/630 = 70 - 1260/630 = -1190/630 - After reducing the fraction, the answer is -17/9
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