SOLUTION: I need help with the following 2 questions: #1 -3u-(5u+7)=-2 #2 -(8d-7)-63=0

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Question 107533: I need help with the following 2 questions:

#1 -3u-(5u+7)=-2

#2 -(8d-7)-63=0
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
#1



-3u-%285u%2B7%29=-2 Start with the given equation



-3u-5u-7=-2 Distribute the negative


-8u-7=-2 Combine like terms on the left side


-8u=-2%2B7Add 7 to both sides


-8u=5 Combine like terms on the right side


u=%285%29%2F%28-8%29 Divide both sides by -8 to isolate u



u=-5%2F8 Reduce

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Answer:
So our answer is u=-5%2F8 (which is approximately u=-0.625 in decimal form)




#2


-%288d-7%29-63=0 Start with the given equation



-8d%2B7-63=0 Distribute the negative


-8d-56=0 Combine like terms on the left side


-8d=0%2B56Add 56 to both sides


-8d=56 Combine like terms on the right side


d=%2856%29%2F%28-8%29 Divide both sides by -8 to isolate d



d=-7 Divide

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Answer:
So our answer is d=-7