Posted by **Pat** on Monday, April 16, 2007 at 1:06pm.

Evaluate [-7] - [-8]

-7-(-8) = -7+8=+1

Always remember that a ( + and + gives us + ) and a ( - and - gives us + ) and a + and - gives us -

Always when subtracting or adding take the sign of the biggest number which will be the sign of your answer , and work out if it is a + or - by this rule

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