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posted by A.W. Sunday, February 1, 2009 at 9:32pm.

I have two questions: first question is : [ 8(6-1)-1]-[2-(5-2)] i got 40 as my answer is this right? And second question is -y + - 80 an equivalent expression to -(y+80)? Because I got -y + - 80.

yes! they are both correct! good job!

wait! i got 45 for the 1st one

No, 40 is right. [8(6 - 1) - 1] - [2 - (5 - 2)] [8(5) - 1] - (2 - 3) 40 - 1 - (-1) 40

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