Subtract 8/21 from 75/10, Solve 7 5/10

Subtract 8/21 from 75/10

1^st number: 7 5/10, 2^nd number: 8/21

75/10 - 8/21 is 299/42.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 10 × 21 = 210,
75/10 = 75 × 21/10 × 21 = 1575/210
Likewise, for the 2nd fraction, since 21 × 10 = 210,
8/21 = 8 × 10/21 × 10 = 80/210
Subtract the two like fractions:
1575/210 - 80/210 = 1575 - 80/210 = 1495/210
After reducing the fraction, the answer is 299/42
In mixed form: 75/42

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