Subtract 80/49 from 35/70, Solve 35/70

Subtract 80/49 from 35/70

1^st number: 35/70, 2^nd number: 1 31/49

35/70 - 80/49 is -111/98.

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,
35/70 = 35 × 7/70 × 7 = 245/490
Likewise, for the 2nd fraction, since 49 × 10 = 490,
80/49 = 80 × 10/49 × 10 = 800/490
Subtract the two like fractions:
245/490 - 800/490 = 245 - 800/490 = -555/490
After reducing the fraction, the answer is -111/98

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