Subtract 9/72 from 28/35, Solve 28/35

Subtract 9/72 from 28/35

28/35 - 9/72 is 27/40.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 72 is 2520

Next, find the equivalent fraction of both fractional numbers with denominator 2520
For the 1st fraction, since 35 × 72 = 2520,
28/35 = 28 × 72/35 × 72 = 2016/2520
Likewise, for the 2nd fraction, since 72 × 35 = 2520,
9/72 = 9 × 35/72 × 35 = 315/2520
Subtract the two like fractions:
2016/2520 - 315/2520 = 2016 - 315/2520 = 1701/2520
After reducing the fraction, the answer is 27/40

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