Subtract 84/45 from 24/70, Solve 24/70

Subtract 84/45 from 24/70

1^st number: 24/70, 2^nd number: 1 39/45

24/70 - 84/45 is -32/21.

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,
24/70 = 24 × 9/70 × 9 = 216/630
Likewise, for the 2nd fraction, since 45 × 14 = 630,
84/45 = 84 × 14/45 × 14 = 1176/630
Subtract the two like fractions:
216/630 - 1176/630 = 216 - 1176/630 = -960/630
After reducing the fraction, the answer is -32/21

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