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The calculator won't work so if this makes it to the internet is: 7x-4=3x+8

 

                                                                                            x is about 5.2 true?

Guest Apr 3, 2017
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 #1
avatar+4172 
+2

 7x - 4 = 3x + 8

 

Add 4 to both sides.

7x = 3x + 12

 

Subtract 3x from both sides.

7x - 3x = 12

4x = 12

 

Divide both sides by 4.

x = 12/4

x = 3

 

Check: 7(3) - 4 = 3(3) + 8

            21 - 4 = 9 + 8

            17 = 17   true

hectictar  Apr 3, 2017
 #2
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+1

thanks

Guest Apr 3, 2017

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