Subtract 70/96 from 25/21, Solve 1 4/21

Subtract 70/96 from 25/21

1^st number: 1 4/21, 2^nd number: 70/96

25/21 - 70/96 is 155/336.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 96 is 672

Next, find the equivalent fraction of both fractional numbers with denominator 672
For the 1st fraction, since 21 × 32 = 672,
25/21 = 25 × 32/21 × 32 = 800/672
Likewise, for the 2nd fraction, since 96 × 7 = 672,
70/96 = 70 × 7/96 × 7 = 490/672
Subtract the two like fractions:
800/672 - 490/672 = 800 - 490/672 = 310/672
After reducing the fraction, the answer is 155/336

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