Subtract 50/84 from 90/27, Solve 3 9/27

Subtract 50/84 from 90/27

1^st number: 3 9/27, 2^nd number: 50/84

90/27 - 50/84 is 115/42.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 84 is 756

Next, find the equivalent fraction of both fractional numbers with denominator 756
For the 1st fraction, since 27 × 28 = 756,
90/27 = 90 × 28/27 × 28 = 2520/756
Likewise, for the 2nd fraction, since 84 × 9 = 756,
50/84 = 50 × 9/84 × 9 = 450/756
Subtract the two like fractions:
2520/756 - 450/756 = 2520 - 450/756 = 2070/756
After reducing the fraction, the answer is 115/42
In mixed form: 231/42

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