Solutions by everydaycalculation.com

1684 - 1535 is -521.

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

LCM of 84 and 35 is**420**

Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,

1684 = 16 × 584 × 5 = 80420 - Likewise, for the 2nd fraction, since 35 × 12 = 420,

1535 = 15 × 1235 × 12 = 180420 - Subtract the two like fractions:

80420 - 180420 = 80 - 180420 = -100420 - After reducing the fraction, the answer is -521

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