Subtract 70/75 from 7/40
7/40 - 70/75 is -91/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 75 is 600
Next, find the equivalent fraction of both fractional numbers with denominator 600 - For the 1st fraction, since 40 × 15 = 600,
7/40 = 7 × 15/40 × 15 = 105/600 - Likewise, for the 2nd fraction, since 75 × 8 = 600,
70/75 = 70 × 8/75 × 8 = 560/600 - Subtract the two like fractions:
105/600 - 560/600 = 105 - 560/600 = -455/600 - After reducing the fraction, the answer is -91/120
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