Subtract 18/49 from 6/70, Solve 6/70

Subtract 18/49 from 6/70

6/70 - 18/49 is -69/245.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 49 is 490

Next, find the equivalent fraction of both fractional numbers with denominator 490
For the 1st fraction, since 70 × 7 = 490,
6/70 = 6 × 7/70 × 7 = 42/490
Likewise, for the 2nd fraction, since 49 × 10 = 490,
18/49 = 18 × 10/49 × 10 = 180/490
Subtract the two like fractions:
42/490 - 180/490 = 42 - 180/490 = -138/490
After reducing the fraction, the answer is -69/245

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