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Addition of Negative Numbers (-X-Y = -(X+Y))

-146+-78--124...

Question

- 146 + (-78) - (-124) + 69

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Solution

- 146 + (-78) - (-124) + 69
$⟹$ - 146 + (-78) - (-124) + 69 = -146 -78 + 124 + 69
$∴$ - 146 + (-78) - (-124) + 69 = - 31

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