Subtract 60/63 from 40/70
40/70 - 60/63 is -8/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
40/70 = 40 × 9/70 × 9 = 360/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
60/63 = 60 × 10/63 × 10 = 600/630 - Subtract the two like fractions:
360/630 - 600/630 = 360 - 600/630 = -240/630 - After reducing the fraction, the answer is -8/21
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