Subtract 90/70 from 24/48, Solve 24/48

Subtract 90/70 from 24/48

1^st number: 24/48, 2^nd number: 1 20/70

24/48 - 90/70 is -11/14.

Find the least common denominator or LCM of the two denominators:
LCM of 48 and 70 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 48 × 35 = 1680,
24/48 = 24 × 35/48 × 35 = 840/1680
Likewise, for the 2nd fraction, since 70 × 24 = 1680,
90/70 = 90 × 24/70 × 24 = 2160/1680
Subtract the two like fractions:
840/1680 - 2160/1680 = 840 - 2160/1680 = -1320/1680
After reducing the fraction, the answer is -11/14

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