Subtract 56/40 from 28/32, Solve 28/32

Subtract 56/40 from 28/32

1^st number: 28/32, 2^nd number: 1 16/40

28/32 - 56/40 is -21/40.

Find the least common denominator or LCM of the two denominators:
LCM of 32 and 40 is 160

Next, find the equivalent fraction of both fractional numbers with denominator 160
For the 1st fraction, since 32 × 5 = 160,
28/32 = 28 × 5/32 × 5 = 140/160
Likewise, for the 2nd fraction, since 40 × 4 = 160,
56/40 = 56 × 4/40 × 4 = 224/160
Subtract the two like fractions:
140/160 - 224/160 = 140 - 224/160 = -84/160
After reducing the fraction, the answer is -21/40

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