Subtract 80/49 from 40/18, Solve 2 4/18

Subtract 80/49 from 40/18

1^st number: 2 4/18, 2^nd number: 1 31/49

40/18 - 80/49 is 260/441.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 49 is 882

Next, find the equivalent fraction of both fractional numbers with denominator 882
For the 1st fraction, since 18 × 49 = 882,
40/18 = 40 × 49/18 × 49 = 1960/882
Likewise, for the 2nd fraction, since 49 × 18 = 882,
80/49 = 80 × 18/49 × 18 = 1440/882
Subtract the two like fractions:
1960/882 - 1440/882 = 1960 - 1440/882 = 520/882
After reducing the fraction, the answer is 260/441

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