Subtract 80/70 from 50/45
1st number: 1 5/45, 2nd number: 1 10/70
50/45 - 80/70 is -2/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
50/45 = 50 × 14/45 × 14 = 700/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
80/70 = 80 × 9/70 × 9 = 720/630 - Subtract the two like fractions:
700/630 - 720/630 = 700 - 720/630 = -20/630 - After reducing the fraction, the answer is -2/63
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