Subtract 84/80 from 2/18, Solve 2/18

Subtract 84/80 from 2/18

1^st number: 2/18, 2^nd number: 1 4/80

2/18 - 84/80 is -169/180.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 80 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 18 × 40 = 720,
2/18 = 2 × 40/18 × 40 = 80/720
Likewise, for the 2nd fraction, since 80 × 9 = 720,
84/80 = 84 × 9/80 × 9 = 756/720
Subtract the two like fractions:
80/720 - 756/720 = 80 - 756/720 = -676/720
After reducing the fraction, the answer is -169/180

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