Subtract 42/10 from 6/72, Solve 6/72

Subtract 42/10 from 6/72

1^st number: 6/72, 2^nd number: 4 2/10

6/72 - 42/10 is -247/60.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 10 is 360

Next, find the equivalent fraction of both fractional numbers with denominator 360
For the 1st fraction, since 72 × 5 = 360,
6/72 = 6 × 5/72 × 5 = 30/360
Likewise, for the 2nd fraction, since 10 × 36 = 360,
42/10 = 42 × 36/10 × 36 = 1512/360
Subtract the two like fractions:
30/360 - 1512/360 = 30 - 1512/360 = -1482/360
After reducing the fraction, the answer is -247/60

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