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

Subtract 2/80 from 4/18

4/18 - 2/80 is 71/360.

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,
4/18 = 4 × 40/18 × 40 = 160/720
Likewise, for the 2nd fraction, since 80 × 9 = 720,
2/80 = 2 × 9/80 × 9 = 18/720
Subtract the two like fractions:
160/720 - 18/720 = 160 - 18/720 = 142/720
After reducing the fraction, the answer is 71/360

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