Subtract 45/98 from 90/70
1st number: 1 20/70, 2nd number: 45/98
90/70 - 45/98 is 81/98.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 98 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 70 × 7 = 490,
90/70 = 90 × 7/70 × 7 = 630/490 - Likewise, for the 2nd fraction, since 98 × 5 = 490,
45/98 = 45 × 5/98 × 5 = 225/490 - Subtract the two like fractions:
630/490 - 225/490 = 630 - 225/490 = 405/490 - After reducing the fraction, the answer is 81/98
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