Subtract 96/42 from 3/80, Solve 3/80

Subtract 96/42 from 3/80

1^st number: 3/80, 2^nd number: 2 12/42

3/80 - 96/42 is -1259/560.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 42 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 80 × 21 = 1680,
3/80 = 3 × 21/80 × 21 = 63/1680
Likewise, for the 2nd fraction, since 42 × 40 = 1680,
96/42 = 96 × 40/42 × 40 = 3840/1680
Subtract the two like fractions:
63/1680 - 3840/1680 = 63 - 3840/1680 = -3777/1680
After reducing the fraction, the answer is -1259/560

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