Subtract 10/6 from 20/80, Solve 20/80

Subtract 10/6 from 20/80

1^st number: 20/80, 2^nd number: 1 4/6

20/80 - 10/6 is -17/12.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 6 is 240

Next, find the equivalent fraction of both fractional numbers with denominator 240
For the 1st fraction, since 80 × 3 = 240,
20/80 = 20 × 3/80 × 3 = 60/240
Likewise, for the 2nd fraction, since 6 × 40 = 240,
10/6 = 10 × 40/6 × 40 = 400/240
Subtract the two like fractions:
60/240 - 400/240 = 60 - 400/240 = -340/240
After reducing the fraction, the answer is -17/12

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