Subtract 9/6 from 81/70, Solve 1 11/70

Subtract 9/6 from 81/70

1^st number: 1 11/70, 2^nd number: 1 3/6

81/70 - 9/6 is -12/35.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 6 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 70 × 3 = 210,
81/70 = 81 × 3/70 × 3 = 243/210
Likewise, for the 2nd fraction, since 6 × 35 = 210,
9/6 = 9 × 35/6 × 35 = 315/210
Subtract the two like fractions:
243/210 - 315/210 = 243 - 315/210 = -72/210
After reducing the fraction, the answer is -12/35

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