Subtract 24/45 from 4/70, Solve 4/70

Subtract 24/45 from 4/70

4/70 - 24/45 is -10/21.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 45 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 70 × 9 = 630,
4/70 = 4 × 9/70 × 9 = 36/630
Likewise, for the 2nd fraction, since 45 × 14 = 630,
24/45 = 24 × 14/45 × 14 = 336/630
Subtract the two like fractions:
36/630 - 336/630 = 36 - 336/630 = -300/630
After reducing the fraction, the answer is -10/21

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