Subtract 45/30 from 45/40, Solve 1 5/40

Subtract 45/30 from 45/40

1^st number: 1 5/40, 2^nd number: 1 15/30

45/40 - 45/30 is -3/8.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 40 × 3 = 120,
45/40 = 45 × 3/40 × 3 = 135/120
Likewise, for the 2nd fraction, since 30 × 4 = 120,
45/30 = 45 × 4/30 × 4 = 180/120
Subtract the two like fractions:
135/120 - 180/120 = 135 - 180/120 = -45/120
After reducing the fraction, the answer is -3/8

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