Subtract 7/32 from 70/21, Solve 3 7/21

Subtract 7/32 from 70/21

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

70/21 - 7/32 is 299/96.

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,
70/21 = 70 × 32/21 × 32 = 2240/672
Likewise, for the 2nd fraction, since 32 × 21 = 672,
7/32 = 7 × 21/32 × 21 = 147/672
Subtract the two like fractions:
2240/672 - 147/672 = 2240 - 147/672 = 2093/672
After reducing the fraction, the answer is 299/96
In mixed form: 311/96

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