Subtract 9/72 from 5/70, Solve 5/70

Subtract 9/72 from 5/70

5/70 - 9/72 is -3/56.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 72 is 2520

Next, find the equivalent fraction of both fractional numbers with denominator 2520
For the 1st fraction, since 70 × 36 = 2520,
5/70 = 5 × 36/70 × 36 = 180/2520
Likewise, for the 2nd fraction, since 72 × 35 = 2520,
9/72 = 9 × 35/72 × 35 = 315/2520
Subtract the two like fractions:
180/2520 - 315/2520 = 180 - 315/2520 = -135/2520
After reducing the fraction, the answer is -3/56

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