Subtract 75/70 from 30/9, Solve 3 3/9

Subtract 75/70 from 30/9

1^st number: 3 3/9, 2^nd number: 1 5/70

30/9 - 75/70 is 95/42.

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,
30/9 = 30 × 70/9 × 70 = 2100/630
Likewise, for the 2nd fraction, since 70 × 9 = 630,
75/70 = 75 × 9/70 × 9 = 675/630
Subtract the two like fractions:
2100/630 - 675/630 = 2100 - 675/630 = 1425/630
After reducing the fraction, the answer is 95/42
In mixed form: 211/42

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