Solutions by everydaycalculation.com

190 - 636 is -745.

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

LCM of 90 and 36 is**180**

Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,

190 = 1 × 290 × 2 = 2180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,

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

2180 - 30180 = 2 - 30180 = -28180 - After reducing the fraction, the answer is -745

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