Solutions by everydaycalculation.com

1^{st} number: 27/90, 2^{nd} number: 1 5/45

2790 - 5045 is -7390.

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

LCM of 90 and 45 is**90**

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

2790 = 27 × 190 × 1 = 2790 - Likewise, for the 2nd fraction, since 45 × 2 = 90,

5045 = 50 × 245 × 2 = 10090 - Subtract the two like fractions:

2790 - 10090 = 27 - 10090 = -7390

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