Subtract 27/49 from 90/70
1st number: 1 20/70, 2nd number: 27/49
90/70 - 27/49 is 36/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 49 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 49 × 10 = 490,
27/49 = 27 × 10/49 × 10 = 270/490 - Subtract the two like fractions:
630/490 - 270/490 = 630 - 270/490 = 360/490 - After reducing the fraction, the answer is 36/49
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