Subtract 90/7 from 81/48, Solve 1 33/48

Subtract 90/7 from 81/48

1^st number: 1 33/48, 2^nd number: 12 6/7

81/48 - 90/7 is -1251/112.

Find the least common denominator or LCM of the two denominators:
LCM of 48 and 7 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 48 × 7 = 336,
81/48 = 81 × 7/48 × 7 = 567/336
Likewise, for the 2nd fraction, since 7 × 48 = 336,
90/7 = 90 × 48/7 × 48 = 4320/336
Subtract the two like fractions:
567/336 - 4320/336 = 567 - 4320/336 = -3753/336
After reducing the fraction, the answer is -1251/112

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