Subtract 84/63 from 80/36, Solve 2 8/36

Subtract 84/63 from 80/36

1^st number: 2 8/36, 2^nd number: 1 21/63

80/36 - 84/63 is 8/9.

Find the least common denominator or LCM of the two denominators:
LCM of 36 and 63 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 63 × 4 = 252,
84/63 = 84 × 4/63 × 4 = 336/252
Subtract the two like fractions:
560/252 - 336/252 = 560 - 336/252 = 224/252
After reducing the fraction, the answer is 8/9

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