Subtract 70/80 from 3/63
3/63 - 70/80 is -139/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 80 is 5040
Next, find the equivalent fraction of both fractional numbers with denominator 5040 - For the 1st fraction, since 63 × 80 = 5040,
3/63 = 3 × 80/63 × 80 = 240/5040 - Likewise, for the 2nd fraction, since 80 × 63 = 5040,
70/80 = 70 × 63/80 × 63 = 4410/5040 - Subtract the two like fractions:
240/5040 - 4410/5040 = 240 - 4410/5040 = -4170/5040 - After reducing the fraction, the answer is -139/168
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