Subtract 24/42 from 3/72, Solve 3/72

Subtract 24/42 from 3/72

3/72 - 24/42 is -89/168.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 42 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 72 × 7 = 504,
3/72 = 3 × 7/72 × 7 = 21/504
Likewise, for the 2nd fraction, since 42 × 12 = 504,
24/42 = 24 × 12/42 × 12 = 288/504
Subtract the two like fractions:
21/504 - 288/504 = 21 - 288/504 = -267/504
After reducing the fraction, the answer is -89/168

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