Subtract 80/56 from 7/18, Solve 7/18

Subtract 80/56 from 7/18

1^st number: 7/18, 2^nd number: 1 24/56

7/18 - 80/56 is -131/126.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 56 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 18 × 28 = 504,
7/18 = 7 × 28/18 × 28 = 196/504
Likewise, for the 2nd fraction, since 56 × 9 = 504,
80/56 = 80 × 9/56 × 9 = 720/504
Subtract the two like fractions:
196/504 - 720/504 = 196 - 720/504 = -524/504
After reducing the fraction, the answer is -131/126

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