Subtract 4/32 from 21/20, Solve 1 1/20

Subtract 4/32 from 21/20

1^st number: 1 1/20, 2^nd number: 4/32

21/20 - 4/32 is 37/40.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 32 is 160

Next, find the equivalent fraction of both fractional numbers with denominator 160
For the 1st fraction, since 20 × 8 = 160,
21/20 = 21 × 8/20 × 8 = 168/160
Likewise, for the 2nd fraction, since 32 × 5 = 160,
4/32 = 4 × 5/32 × 5 = 20/160
Subtract the two like fractions:
168/160 - 20/160 = 168 - 20/160 = 148/160
After reducing the fraction, the answer is 37/40

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