Subtract 40/90 from 12/56
12/56 - 40/90 is -29/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 90 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
12/56 = 12 × 45/56 × 45 = 540/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
40/90 = 40 × 28/90 × 28 = 1120/2520 - Subtract the two like fractions:
540/2520 - 1120/2520 = 540 - 1120/2520 = -580/2520 - After reducing the fraction, the answer is -29/126
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