Subtract 9/42 from 8/5, Solve 1 3/5

Subtract 9/42 from 8/5

1^st number: 1 3/5, 2^nd number: 9/42

8/5 - 9/42 is 97/70.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 5 × 42 = 210,
8/5 = 8 × 42/5 × 42 = 336/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
9/42 = 9 × 5/42 × 5 = 45/210
Subtract the two like fractions:
336/210 - 45/210 = 336 - 45/210 = 291/210
After reducing the fraction, the answer is 97/70
In mixed form: 127/70

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