+0  
 
+1
431
4
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1/x+4=8

 

then 1/x+8 equals

 Nov 18, 2017
 #1
avatar+502 
+1

In the first one, IF u solve for x the answer comes to 0.625 or 5/8. So substitute the value of x into the second equation the answer comes to 9.6 or 48/5.

But IF my guess is right so in the first one the equation is \(\frac{1}{x} + 4=8\) and u see that in the 2nd equation its \(\frac{1}{x} +8 \) then the answer should be 16 cuz since +8 is 2 times +4 so then the answer will also be *2.

Hope u got my point.

 

 

laughlaughlaugh

 Nov 18, 2017
 #2
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0

1/x+4=8,  then 1/x+8 equals

 

1/x + 4 = 8    subtract 4 from both sides

1/x =4            cross multiply

4x = 1             divide both sides by 4

x = 1/4

 

1/x+8 =       sub 1/4 for x

1/(1/4) + 8 =

1 x 4 + 8 =12

 Nov 18, 2017
 #3
avatar+7352 
+2

1/x + 4  =  8       Subtract  4  from both sides of the equation.

 

1/x  =  8 - 4

 

1/x  =  4

 

So.......

 

1/x + 8               Since  1/x = 4 , we can substitute  4  in for 1/x .

 

=  4 + 8

 

=  12

 Nov 18, 2017
 #4
avatar+2340 
+2

Here's probably the easist method of all!
 

\(\frac{1}{x}+4=8\)Add 4 to both sides.
\(\frac{1}{x}+8=12\)Done! With only one step, I have shown that \(\frac{1}{x}+8\) is equivalent to 12. 
 Nov 18, 2017
edited by TheXSquaredFactor  Nov 18, 2017

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