Subtract 70/5 from 12/42, Solve 12/42

Subtract 70/5 from 12/42

1^st number: 12/42, 2^nd number: 14 0/5

12/42 - 70/5 is -96/7.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 5 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
12/42 = 12 × 5/42 × 5 = 60/210
Likewise, for the 2nd fraction, since 5 × 42 = 210,
70/5 = 70 × 42/5 × 42 = 2940/210
Subtract the two like fractions:
60/210 - 2940/210 = 60 - 2940/210 = -2880/210
After reducing the fraction, the answer is -96/7

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