Subtract 70/63 from 28/80
1st number: 28/80, 2nd number: 1 7/63
28/80 - 70/63 is -137/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 63 is 5040
Next, find the equivalent fraction of both fractional numbers with denominator 5040 - For the 1st fraction, since 80 × 63 = 5040,
28/80 = 28 × 63/80 × 63 = 1764/5040 - Likewise, for the 2nd fraction, since 63 × 80 = 5040,
70/63 = 70 × 80/63 × 80 = 5600/5040 - Subtract the two like fractions:
1764/5040 - 5600/5040 = 1764 - 5600/5040 = -3836/5040 - After reducing the fraction, the answer is -137/180
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