Subtract 18/6 from 4/40, Solve 4/40

Subtract 18/6 from 4/40

1^st number: 4/40, 2^nd number: 3 0/6

4/40 - 18/6 is -29/10.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 6 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 40 × 3 = 120,
4/40 = 4 × 3/40 × 3 = 12/120
Likewise, for the 2nd fraction, since 6 × 20 = 120,
18/6 = 18 × 20/6 × 20 = 360/120
Subtract the two like fractions:
12/120 - 360/120 = 12 - 360/120 = -348/120
After reducing the fraction, the answer is -29/10

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