Subtract 70/30 from 14/42, Solve 14/42

Subtract 70/30 from 14/42

1^st number: 14/42, 2^nd number: 2 10/30

14/42 - 70/30 is -2/1.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
14/42 = 14 × 5/42 × 5 = 70/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
70/30 = 70 × 7/30 × 7 = 490/210
Subtract the two like fractions:
70/210 - 490/210 = 70 - 490/210 = -420/210
After reducing the fraction, the answer is -2/1

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