Subtract 30/35 from 12/18
12/18 - 30/35 is -4/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 35 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 18 × 35 = 630,
12/18 = 12 × 35/18 × 35 = 420/630 - Likewise, for the 2nd fraction, since 35 × 18 = 630,
30/35 = 30 × 18/35 × 18 = 540/630 - Subtract the two like fractions:
420/630 - 540/630 = 420 - 540/630 = -120/630 - After reducing the fraction, the answer is -4/21
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