Subtract 42/8 from 70/72
1st number: 70/72, 2nd number: 5 2/8
70/72 - 42/8 is -77/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
70/72 = 70 × 1/72 × 1 = 70/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
42/8 = 42 × 9/8 × 9 = 378/72 - Subtract the two like fractions:
70/72 - 378/72 = 70 - 378/72 = -308/72 - After reducing the fraction, the answer is -77/18
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