Subtract 4/70 from 80/36, Solve 2 8/36

Subtract 4/70 from 80/36

1^st number: 2 8/36, 2^nd number: 4/70

80/36 - 4/70 is 682/315.

Find the least common denominator or LCM of the two denominators:
LCM of 36 and 70 is 1260

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 36 × 35 = 1260,
80/36 = 80 × 35/36 × 35 = 2800/1260
Likewise, for the 2nd fraction, since 70 × 18 = 1260,
4/70 = 4 × 18/70 × 18 = 72/1260
Subtract the two like fractions:
2800/1260 - 72/1260 = 2800 - 72/1260 = 2728/1260
After reducing the fraction, the answer is 682/315
In mixed form: 252/315

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