Subtract 10/70 from 4/9, Solve 4/9

Subtract 10/70 from 4/9

4/9 - 10/70 is 19/63.

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,
4/9 = 4 × 70/9 × 70 = 280/630
Likewise, for the 2nd fraction, since 70 × 9 = 630,
10/70 = 10 × 9/70 × 9 = 90/630
Subtract the two like fractions:
280/630 - 90/630 = 280 - 90/630 = 190/630
After reducing the fraction, the answer is 19/63

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