Subtract 40/70 from 10/18
10/18 - 40/70 is -1/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 18 × 35 = 630,
10/18 = 10 × 35/18 × 35 = 350/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
40/70 = 40 × 9/70 × 9 = 360/630 - Subtract the two like fractions:
350/630 - 360/630 = 350 - 360/630 = -10/630 - After reducing the fraction, the answer is -1/63
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