Subtract 90/7 from 54/16, Solve 3 6/16

Subtract 90/7 from 54/16

1^st number: 3 6/16, 2^nd number: 12 6/7

54/16 - 90/7 is -531/56.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 7 is 112

Next, find the equivalent fraction of both fractional numbers with denominator 112
For the 1st fraction, since 16 × 7 = 112,
54/16 = 54 × 7/16 × 7 = 378/112
Likewise, for the 2nd fraction, since 7 × 16 = 112,
90/7 = 90 × 16/7 × 16 = 1440/112
Subtract the two like fractions:
378/112 - 1440/112 = 378 - 1440/112 = -1062/112
After reducing the fraction, the answer is -531/56

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