Solutions by everydaycalculation.com

545 - 636 is -118.

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

LCM of 45 and 36 is**180**

Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,

545 = 5 × 445 × 4 = 20180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,

636 = 6 × 536 × 5 = 30180 - Subtract the two like fractions:

20180 - 30180 = 20 - 30180 = -10180 - After reducing the fraction, the answer is -118

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