Subtract 90/96 from 42/84
42/84 - 90/96 is -7/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 96 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 84 × 8 = 672,
42/84 = 42 × 8/84 × 8 = 336/672 - Likewise, for the 2nd fraction, since 96 × 7 = 672,
90/96 = 90 × 7/96 × 7 = 630/672 - Subtract the two like fractions:
336/672 - 630/672 = 336 - 630/672 = -294/672 - After reducing the fraction, the answer is -7/16
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