Subtract 42/30 from 2/7, Solve 2/7 - 1 12/30 as a fraction

Subtract 42/30 from 2/7

1^st number: 2/7, 2^nd number: 1 12/30

2/7 - 42/30 is -39/35.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 7 × 30 = 210,
2/7 = 2 × 30/7 × 30 = 60/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
42/30 = 42 × 7/30 × 7 = 294/210
Subtract the two like fractions:
60/210 - 294/210 = 60 - 294/210 = -234/210
After reducing the fraction, the answer is -39/35

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