Subtract 42/45 from 40/32, Solve 1 8/32

Subtract 42/45 from 40/32

1^st number: 1 8/32, 2^nd number: 42/45

40/32 - 42/45 is 19/60.

Find the least common denominator or LCM of the two denominators:
LCM of 32 and 45 is 1440

Next, find the equivalent fraction of both fractional numbers with denominator 1440
For the 1st fraction, since 32 × 45 = 1440,
40/32 = 40 × 45/32 × 45 = 1800/1440
Likewise, for the 2nd fraction, since 45 × 32 = 1440,
42/45 = 42 × 32/45 × 32 = 1344/1440
Subtract the two like fractions:
1800/1440 - 1344/1440 = 1800 - 1344/1440 = 456/1440
After reducing the fraction, the answer is 19/60

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