Subtract 7/32 from 75/21, Solve 3 12/21

Subtract 7/32 from 75/21

1^st number: 3 12/21, 2^nd number: 7/32

75/21 - 7/32 is 751/224.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 32 is 672

Next, find the equivalent fraction of both fractional numbers with denominator 672
For the 1st fraction, since 21 × 32 = 672,
75/21 = 75 × 32/21 × 32 = 2400/672
Likewise, for the 2nd fraction, since 32 × 21 = 672,
7/32 = 7 × 21/32 × 21 = 147/672
Subtract the two like fractions:
2400/672 - 147/672 = 2400 - 147/672 = 2253/672
After reducing the fraction, the answer is 751/224
In mixed form: 379/224

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