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How can I do 3x+4=243

 
Guest Sep 13, 2017
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 #1
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First, isolate the variable which is 3x.

You can do this by subtracting 4 from both sides of the equation.

3x+4-4=243-4

3x=239

 

Now, if 3x equals 239, than x must be 239 divided by 3, because we devided 3x by 3 to get to x, and you always do the same to both sides.

 

3x=239

3x/3=239/3

x=79 2/3

angel

 
ISmellGood  Sep 13, 2017
 #2
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79.6666666667

 
Guest Sep 13, 2017

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