Subtract 42/9 from 24/70, Solve 24/70

Subtract 42/9 from 24/70

1^st number: 24/70, 2^nd number: 4 6/9

24/70 - 42/9 is -454/105.

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

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 70 × 9 = 630,
24/70 = 24 × 9/70 × 9 = 216/630
Likewise, for the 2nd fraction, since 9 × 70 = 630,
42/9 = 42 × 70/9 × 70 = 2940/630
Subtract the two like fractions:
216/630 - 2940/630 = 216 - 2940/630 = -2724/630
After reducing the fraction, the answer is -454/105

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