# How to rearrange the subject of the formula?

• October 4th 2009, 11:58 AM
maths noob
How to rearrange the subject of the formula?
could someone show me how to do these(make x the subject) feel like this (Headbang) atm

1. y=4/5 nx^3

2. y=mx+abx/m

3. m(2x+y)=5(2x-3)
• October 4th 2009, 12:50 PM
SENTINEL4
Quote:

Originally Posted by maths noob
1. y=4/5 nx^3

$y=\frac{4}{5}nx^3 \Rightarrow \frac{5}{4}y=nx^3 \Rightarrow \frac{5}{4n}y=x^3$

I don't know how to write it in Latex so x=cubic root of $\frac{5}{4n}y$