Subtract 24/84 from 1/90, Solve 1/90

Subtract 24/84 from 1/90

1/90 - 24/84 is -173/630.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 84 is 1260

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 90 × 14 = 1260,
1/90 = 1 × 14/90 × 14 = 14/1260
Likewise, for the 2nd fraction, since 84 × 15 = 1260,
24/84 = 24 × 15/84 × 15 = 360/1260
Subtract the two like fractions:
14/1260 - 360/1260 = 14 - 360/1260 = -346/1260
After reducing the fraction, the answer is -173/630

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