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Math Help - How to rearrange the subject of the formula?

  1. #1
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    How to rearrange the subject of the formula?

    could someone show me how to do these(make x the subject) feel like this atm

    1. y=4/5 nx^3

    2. y=mx+abx/m

    3. m(2x+y)=5(2x-3)
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  2. #2
    Member SENTINEL4's Avatar
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    Quote Originally Posted by maths noob View Post
    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
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