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Question 119904: I would love someone to help me answer this question.
I need to write a equivalent expression to the following without parenthesis.
-(z+92) Would someone please explain to me how to do this. Thank you so much for any help given.
Answer by bucky(2189)   (Show Source):
You can put this solution on YOUR website! You can view this in a couple of ways.
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One way is to use the following rules:
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If a set of parentheses is preceded by a + sign you can just remove the parentheses without
changing the terms inside the parentheses.
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However, if a set of parentheses is preceded by a - sign you can remove the parentheses
if you also change the signs of the terms inside the parentheses.
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Or, if the parentheses are preceded by a minus sign, you can view it as a distributed
multiplication by -1.
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Following the first pair of rules about parentheses for this problem, since the given expression:
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-(z+92)
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is preceded by a minus sign, you can remove the parentheses if at the same time you change
the signs of the terms inside the parentheses to get:
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-z - 92
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The second way of viewing this problem is to view it as a distributed multiplication
of:
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-1(z + 92)
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When you multiply the -1 times each of the terms inside the parentheses, the result is:
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-1*z + (-1)*92 = -z - 92
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In either case, the result is the same ... -z - 92
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Hope one of these ways helps you to understand the problem.
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