Subtract 18/8 from 40/49, Solve 40/49

Subtract 18/8 from 40/49

1^st number: 40/49, 2^nd number: 2 2/8

40/49 - 18/8 is -281/196.

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 8 is 392

Next, find the equivalent fraction of both fractional numbers with denominator 392
For the 1st fraction, since 49 × 8 = 392,
40/49 = 40 × 8/49 × 8 = 320/392
Likewise, for the 2nd fraction, since 8 × 49 = 392,
18/8 = 18 × 49/8 × 49 = 882/392
Subtract the two like fractions:
320/392 - 882/392 = 320 - 882/392 = -562/392
After reducing the fraction, the answer is -281/196

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