Subtract 9/42 from 80/36, Solve 2 8/36

Subtract 9/42 from 80/36

1^st number: 2 8/36, 2^nd number: 9/42

80/36 - 9/42 is 253/126.

Find the least common denominator or LCM of the two denominators:
LCM of 36 and 42 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 36 × 7 = 252,
80/36 = 80 × 7/36 × 7 = 560/252
Likewise, for the 2nd fraction, since 42 × 6 = 252,
9/42 = 9 × 6/42 × 6 = 54/252
Subtract the two like fractions:
560/252 - 54/252 = 560 - 54/252 = 506/252
After reducing the fraction, the answer is 253/126
In mixed form: 21/126

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