Solutions by everydaycalculation.com

220 - 59 is -4190.

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

LCM of 20 and 9 is**180** - For the 1st fraction, since 20 × 9 = 180,

220 = 2 × 920 × 9 = 18180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,

59 = 5 × 209 × 20 = 100180 - Subtract the two fractions:

18180 - 100180 = 18 - 100180 = -82180 - After reducing the fraction, the answer is -4190

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