Subtract 70/80 from 49/90
49/90 - 70/80 is -119/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
49/90 = 49 × 8/90 × 8 = 392/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
70/80 = 70 × 9/80 × 9 = 630/720 - Subtract the two like fractions:
392/720 - 630/720 = 392 - 630/720 = -238/720 - After reducing the fraction, the answer is -119/360
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Related: 98/90-70/80