Solutions by everydaycalculation.com

69 - 210 is 715.

- Find the least common denominator or LCM of the two denominators:

LCM of 9 and 10 is**90**

Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,

69 = 6 × 109 × 10 = 6090 - Likewise, for the 2nd fraction, since 10 × 9 = 90,

210 = 2 × 910 × 9 = 1890 - Subtract the two like fractions:

6090 - 1890 = 60 - 1890 = 4290 - After reducing the fraction, the answer is 715

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