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I came back! I need help. I hope that my old brother/sister forum rats help me.

Question:

$$\textcolor[rgb]{1,0,0}{Solve\;for\;x:}\\\\ax=b\\\\x=?$$

Can someone please help me? Thank you.

 Sep 15, 2014

Best Answer 

 #1
avatar+118687 
+15

This is a little equation that you are being asked to rearrange.

$$ax=b\\$$

You want the x out the front by itself.   SO you have to get rid of the  $$a$$

You can do this by dividing the LHS by $$a$$   but the equation must stay balanced.

Whatever you do to one side you must also do to the other side.

so this is what happens

$$\\ax=b\\\\
\dfrac{\not{a} x}{\not{a}}=\dfrac{b}{a}\\\\
x=\dfrac{b}{a}\\\\$$

 

 Sep 15, 2014
 #1
avatar+118687 
+15
Best Answer

This is a little equation that you are being asked to rearrange.

$$ax=b\\$$

You want the x out the front by itself.   SO you have to get rid of the  $$a$$

You can do this by dividing the LHS by $$a$$   but the equation must stay balanced.

Whatever you do to one side you must also do to the other side.

so this is what happens

$$\\ax=b\\\\
\dfrac{\not{a} x}{\not{a}}=\dfrac{b}{a}\\\\
x=\dfrac{b}{a}\\\\$$

 

Melody Sep 15, 2014
 #2
avatar+8262 
0

Thanks! 

What is the LHS?

 Sep 15, 2014
 #3
avatar+118687 
+10

It means Left Hand Side   LHS

 Sep 16, 2014
 #4
avatar+8262 
0

Ok thank you.

 Sep 16, 2014

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