Subtract 28/32 from 2/42, Solve 2/42

Subtract 28/32 from 2/42

2/42 - 28/32 is -139/168.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 32 is 672

Next, find the equivalent fraction of both fractional numbers with denominator 672
For the 1st fraction, since 42 × 16 = 672,
2/42 = 2 × 16/42 × 16 = 32/672
Likewise, for the 2nd fraction, since 32 × 21 = 672,
28/32 = 28 × 21/32 × 21 = 588/672
Subtract the two like fractions:
32/672 - 588/672 = 32 - 588/672 = -556/672
After reducing the fraction, the answer is -139/168

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