Subtract 42/16 from 18/7, Solve 2 4/7

Subtract 42/16 from 18/7

1^st number: 2 4/7, 2^nd number: 2 10/16

18/7 - 42/16 is -3/56.

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

Next, find the equivalent fraction of both fractional numbers with denominator 112
For the 1st fraction, since 7 × 16 = 112,
18/7 = 18 × 16/7 × 16 = 288/112
Likewise, for the 2nd fraction, since 16 × 7 = 112,
42/16 = 42 × 7/16 × 7 = 294/112
Subtract the two like fractions:
288/112 - 294/112 = 288 - 294/112 = -6/112
After reducing the fraction, the answer is -3/56

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