Subtract 90/8 from 42/9
1st number: 4 6/9, 2nd number: 11 2/8
42/9 - 90/8 is -79/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
42/9 = 42 × 8/9 × 8 = 336/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
90/8 = 90 × 9/8 × 9 = 810/72 - Subtract the two like fractions:
336/72 - 810/72 = 336 - 810/72 = -474/72 - After reducing the fraction, the answer is -79/12
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