Subtract 42/70 from 4/15, Solve 4/15

Subtract 42/70 from 4/15

4/15 - 42/70 is -1/3.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 70 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 15 × 14 = 210,
4/15 = 4 × 14/15 × 14 = 56/210
Likewise, for the 2nd fraction, since 70 × 3 = 210,
42/70 = 42 × 3/70 × 3 = 126/210
Subtract the two like fractions:
56/210 - 126/210 = 56 - 126/210 = -70/210
After reducing the fraction, the answer is -1/3

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