SOLUTION: Im just reviewing math test that's coming in 2 weeks and I dont understand any of it. When you solve can you show me how you got the following answers? 5-2x=3x-7x=25 5(d+4)=7

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: Im just reviewing math test that's coming in 2 weeks and I dont understand any of it. When you solve can you show me how you got the following answers? 5-2x=3x-7x=25 5(d+4)=7      Log On


   

Question 108006: Im just reviewing math test that's coming in 2 weeks and I dont understand any of it. When you solve can you show me how you got the following answers?
5-2x=3x-7x=25
5(d+4)=7(d-2)
3g-3=3(7-g)
2z-1=4+z
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
5-2x=3x-7x=25 This equation has two equal signs? Double check your problem





#2


5%28d%2B4%29=7%28d-2%29 Start with the given equation



5d%2B20=7d-14 Distribute


5d=7d-14-20Subtract 20 from both sides


5d-7d=-14-20 Subtract 7d from both sides


-2d=-14-20 Combine like terms on the left side


-2d=-34 Combine like terms on the right side


d=%28-34%29%2F%28-2%29 Divide both sides by -2 to isolate d



d=17 Divide

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Answer:
So our answer is d=17




#3



3g-3=3%287-g%29 Start with the given equation



3g-3=21-3g Distribute


3g=21-3g%2B3Add 3 to both sides


3g%2B3g=21%2B3 Add 3g to both sides


6g=21%2B3 Combine like terms on the left side


6g=24 Combine like terms on the right side


g=%2824%29%2F%286%29 Divide both sides by 6 to isolate g



g=4 Divide

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Answer:
So our answer is g=4




#4




2z-1=4%2Bz Start with the given equation



2z=4%2Bz%2B1Add 1 to both sides


2z-z=4%2B1 Subtract z from both sides


z=4%2B1 Combine like terms on the left side


z=5 Combine like terms on the right side

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Answer:
So our answer is z=5