Subtract 40/90 from 98/42
1st number: 2 14/42, 2nd number: 40/90
98/42 - 40/90 is 17/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
98/42 = 98 × 15/42 × 15 = 1470/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
40/90 = 40 × 7/90 × 7 = 280/630 - Subtract the two like fractions:
1470/630 - 280/630 = 1470 - 280/630 = 1190/630 - After reducing the fraction, the answer is 17/9
- In mixed form: 18/9
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