Solutions by everydaycalculation.com

1090 - 4570 is -67126.

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

LCM of 90 and 70 is**630**

Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,

1090 = 10 × 790 × 7 = 70630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,

4570 = 45 × 970 × 9 = 405630 - Subtract the two like fractions:

70630 - 405630 = 70 - 405630 = -335630 - After reducing the fraction, the answer is -67126

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