Subtract 63/3 from 6/40, Solve 6/40

Subtract 63/3 from 6/40

1^st number: 6/40, 2^nd number: 21 0/3

6/40 - 63/3 is -417/20.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 3 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 40 × 3 = 120,
6/40 = 6 × 3/40 × 3 = 18/120
Likewise, for the 2nd fraction, since 3 × 40 = 120,
63/3 = 63 × 40/3 × 40 = 2520/120
Subtract the two like fractions:
18/120 - 2520/120 = 18 - 2520/120 = -2502/120
After reducing the fraction, the answer is -417/20

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