Subtract 80/90 from 2/7
2/7 - 80/90 is -38/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
2/7 = 2 × 90/7 × 90 = 180/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
80/90 = 80 × 7/90 × 7 = 560/630 - Subtract the two like fractions:
180/630 - 560/630 = 180 - 560/630 = -380/630 - After reducing the fraction, the answer is -38/63
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