Subtract 21/30 from 36/63
36/63 - 21/30 is -9/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 30 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
36/63 = 36 × 10/63 × 10 = 360/630 - Likewise, for the 2nd fraction, since 30 × 21 = 630,
21/30 = 21 × 21/30 × 21 = 441/630 - Subtract the two like fractions:
360/630 - 441/630 = 360 - 441/630 = -81/630 - After reducing the fraction, the answer is -9/70
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