Subtract 12/70 from 16/90, Solve 16/90

Subtract 12/70 from 16/90

16/90 - 12/70 is 2/315.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 70 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 90 × 7 = 630,
16/90 = 16 × 7/90 × 7 = 112/630
Likewise, for the 2nd fraction, since 70 × 9 = 630,
12/70 = 12 × 9/70 × 9 = 108/630
Subtract the two like fractions:
112/630 - 108/630 = 112 - 108/630 = 4/630
After reducing the fraction, the answer is 2/315

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