Subtract 4/40 from 18/14, Solve 1 4/14

Subtract 4/40 from 18/14

1^st number: 1 4/14, 2^nd number: 4/40

18/14 - 4/40 is 83/70.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 40 is 280

Next, find the equivalent fraction of both fractional numbers with denominator 280
For the 1st fraction, since 14 × 20 = 280,
18/14 = 18 × 20/14 × 20 = 360/280
Likewise, for the 2nd fraction, since 40 × 7 = 280,
4/40 = 4 × 7/40 × 7 = 28/280
Subtract the two like fractions:
360/280 - 28/280 = 360 - 28/280 = 332/280
After reducing the fraction, the answer is 83/70
In mixed form: 113/70

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