Subtract 28/70 from 8/9, Solve 8/9

Subtract 28/70 from 8/9

8/9 - 28/70 is 22/45.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 70 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 9 × 70 = 630,
8/9 = 8 × 70/9 × 70 = 560/630
Likewise, for the 2nd fraction, since 70 × 9 = 630,
28/70 = 28 × 9/70 × 9 = 252/630
Subtract the two like fractions:
560/630 - 252/630 = 560 - 252/630 = 308/630
After reducing the fraction, the answer is 22/45

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