Subtract 10/70 from 21/5, Solve 4 1/5

Subtract 10/70 from 21/5

1^st number: 4 1/5, 2^nd number: 10/70

21/5 - 10/70 is 142/35.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 70 is 70

Next, find the equivalent fraction of both fractional numbers with denominator 70
For the 1st fraction, since 5 × 14 = 70,
21/5 = 21 × 14/5 × 14 = 294/70
Likewise, for the 2nd fraction, since 70 × 1 = 70,
10/70 = 10 × 1/70 × 1 = 10/70
Subtract the two like fractions:
294/70 - 10/70 = 294 - 10/70 = 284/70
After reducing the fraction, the answer is 142/35
In mixed form: 42/35

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