Solutions by everydaycalculation.com

2042 - 1870 is 23105.

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

LCM of 42 and 70 is**210**

Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,

2042 = 20 × 542 × 5 = 100210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,

1870 = 18 × 370 × 3 = 54210 - Subtract the two like fractions:

100210 - 54210 = 100 - 54210 = 46210 - After reducing the fraction, the answer is 23105

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