Subtract 9/48 from 12/84, Solve 12/84

Subtract 9/48 from 12/84

12/84 - 9/48 is -5/112.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 48 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 84 × 4 = 336,
12/84 = 12 × 4/84 × 4 = 48/336
Likewise, for the 2nd fraction, since 48 × 7 = 336,
9/48 = 9 × 7/48 × 7 = 63/336
Subtract the two like fractions:
48/336 - 63/336 = 48 - 63/336 = -15/336
After reducing the fraction, the answer is -5/112

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