Subtract 18/16 from 9/70, Solve 9/70

Subtract 18/16 from 9/70

1^st number: 9/70, 2^nd number: 1 2/16

9/70 - 18/16 is -279/280.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 16 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 70 × 8 = 560,
9/70 = 9 × 8/70 × 8 = 72/560
Likewise, for the 2nd fraction, since 16 × 35 = 560,
18/16 = 18 × 35/16 × 35 = 630/560
Subtract the two like fractions:
72/560 - 630/560 = 72 - 630/560 = -558/560
After reducing the fraction, the answer is -279/280

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