Subtract 98/70 from 6/8, Solve 6/8 - 1 28/70 as a fraction

Subtract 98/70 from 6/8

1^st number: 6/8, 2^nd number: 1 28/70

6/8 - 98/70 is -13/20.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 70 is 280

Next, find the equivalent fraction of both fractional numbers with denominator 280
For the 1st fraction, since 8 × 35 = 280,
6/8 = 6 × 35/8 × 35 = 210/280
Likewise, for the 2nd fraction, since 70 × 4 = 280,
98/70 = 98 × 4/70 × 4 = 392/280
Subtract the two like fractions:
210/280 - 392/280 = 210 - 392/280 = -182/280
After reducing the fraction, the answer is -13/20

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