Subtract 90/70 from 7/49
1st number: 7/49, 2nd number: 1 20/70
7/49 - 90/70 is -8/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 70 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 49 × 10 = 490,
7/49 = 7 × 10/49 × 10 = 70/490 - Likewise, for the 2nd fraction, since 70 × 7 = 490,
90/70 = 90 × 7/70 × 7 = 630/490 - Subtract the two like fractions:
70/490 - 630/490 = 70 - 630/490 = -560/490 - After reducing the fraction, the answer is -8/7
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