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2014-05-13T19:27:01+08:00

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(-5) [(-4) - (-2) + (-6) + 2 - 4 ]

Two negative signs cancel out to become a plus sign.
(-5) [(-4) +2 + (-6) + 2 - 4 ]

When adding two numbers with different signs, it's always larger minus smaller. Then copy the sign of the Larger number.

= (-5) [ -2 -4 -4]

In adding with similar signs, the sum will have the same sign.

= (-5) [ -10 ]

In multiplication, multiplying with same sign = positive. Otherwise, the product will be negative

= 50

Note: notice that I did the innermost part first, and worked my way out
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2014-05-15T18:03:56+08:00

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( -5 ) (( -4) - (-2) + (-6) + 2 - 4)
**We first distribute the operations, I mean multiplying it.
(-5) (-4 + 2 - 6 + 2 - 4)   ( What happened was, we first computed the operations included with double parenthesis. Next is to compute the  ( -4 + 2 - 6 + 2 - 4 )
 (-5) (-10)          (Then multiply the numbers)
= 50                 ###put in mind that negative multiply to negative become positve,                               but multiplying opposite signs is negative.###
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