Subtract 4/70 from 18/9, Solve 2 0/9

Subtract 4/70 from 18/9

1^st number: 2 0/9, 2^nd number: 4/70

18/9 - 4/70 is 68/35.

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,
18/9 = 18 × 70/9 × 70 = 1260/630
Likewise, for the 2nd fraction, since 70 × 9 = 630,
4/70 = 4 × 9/70 × 9 = 36/630
Subtract the two like fractions:
1260/630 - 36/630 = 1260 - 36/630 = 1224/630
After reducing the fraction, the answer is 68/35
In mixed form: 133/35

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