Subtract 90/49 from 18/80
1st number: 18/80, 2nd number: 1 41/49
18/80 - 90/49 is -3159/1960.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 49 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 80 × 49 = 3920,
18/80 = 18 × 49/80 × 49 = 882/3920 - Likewise, for the 2nd fraction, since 49 × 80 = 3920,
90/49 = 90 × 80/49 × 80 = 7200/3920 - Subtract the two like fractions:
882/3920 - 7200/3920 = 882 - 7200/3920 = -6318/3920 - After reducing the fraction, the answer is -3159/1960
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