Solutions by everydaycalculation.com

290 - 612 is -4390.

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

LCM of 90 and 12 is**180**

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

290 = 2 × 290 × 2 = 4180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,

612 = 6 × 1512 × 15 = 90180 - Subtract the two like fractions:

4180 - 90180 = 4 - 90180 = -86180 - After reducing the fraction, the answer is -4390

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