Subtract 75/70 from 4/9, Solve 4/9 - 1 5/70 as a fraction

Subtract 75/70 from 4/9

1^st number: 4/9, 2^nd number: 1 5/70

4/9 - 75/70 is -79/126.

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,
75/70 = 75 × 9/70 × 9 = 675/630
Subtract the two like fractions:
280/630 - 675/630 = 280 - 675/630 = -395/630
After reducing the fraction, the answer is -79/126

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