Subtract 8/12 from 75/70, Solve 1 5/70

Subtract 8/12 from 75/70

1^st number: 1 5/70, 2^nd number: 8/12

75/70 - 8/12 is 17/42.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 12 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 70 × 6 = 420,
75/70 = 75 × 6/70 × 6 = 450/420
Likewise, for the 2nd fraction, since 12 × 35 = 420,
8/12 = 8 × 35/12 × 35 = 280/420
Subtract the two like fractions:
450/420 - 280/420 = 450 - 280/420 = 170/420
After reducing the fraction, the answer is 17/42

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