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Idea of a Set

Simplify: 21...

Question

Simplify:
$210 - (185 - 35) + 85$

A

145

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B

75

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C

154

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D

-145

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Solution

The correct option is B 145
$210 - ¯ ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ ¯ 185 - 35 + 85 = 210 - 150 + 85 = 145$

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