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${1.4} + {- 0.6} + {2.6} + {- 1.4} + {3.2} + {- 2.8} =$

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2.4

3.4

1.4

0.4

answer is A.

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Detailed Solution

{1.4} + {- 0.6} + {2.6} + {- 1.4} + {3.2} + {- 2.8}

$= 1.4 - [1.4] + (- 0.6) - [- 0.6] + 2.6 - [2.6] + (- 1.4) - [- 1.4] + 3.2 - [3.2] + (- 2.8) - [- 2.8]$

$= (1.4 - 1) + (- 0.6 + 1) + 2.6 - 2 + (- 1.4 + 2) + (3.2 - 3) + (- 2.8 + 3)$

$= (0.4) + (0.4) + (0.6) + (0.6) + (0.2) + (0.2)$

$= 2.4$

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