Solutions by everydaycalculation.com

89 - 210 is 3145.

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

LCM of 9 and 10 is**90** - For the 1st fraction, since 9 × 10 = 90,

89 = 8 × 109 × 10 = 8090 - Likewise, for the 2nd fraction, since 10 × 9 = 90,

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

8090 - 1890 = 80 - 1890 = 6290 - After reducing the fraction, the answer is 3145

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