How do we make x the subject

amashhour · Nov 21, 2009, 08:08 AM

4x=y

s_cianci · Nov 21, 2009, 08:26 AM

What exactly is your question? If you need to solve your equation for x, then divide both sides by 4.

Perito · Nov 21, 2009, 08:28 AM

Quote:

Originally Posted by amashhour

4x=y

Divide both sides of the equation by some quantity intended to isolate the "x". For example. Given the following equation, how can we make x the "subject"?

32x = 64y

If we divide both sides by 32, we'll get this:

$\frac {\cancel{32}x}{\cancel {32}} = \frac { \cancel {64}^{2}\, y}{\cancel{32}}$

$x = 2y$ Viola!

mathwiz3502 · Nov 28, 2009, 03:38 PM

Divide by 4
X=y/4
I believe that there are much more difficult problems in which you have to make x the subject.

How do we make x the subject

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