Respuesta :

Answer:

[tex]r=\frac{3t}{t-1}[/tex]

Step-by-step explanation:

Making r the subject of formula means that we have to rewrite the equation such that it is in the form of r= ___.

Given: t= [tex]\frac{r}{r-3}[/tex]

Multiply both sides by (r -3):

t(r -3)= r

Expand:

rt -3t= r

Bring terms containing 'r' to one side, the rest to the other:

rt -r= 3t

Factorise r out of the left-hand side:

r(t -1)= 3t

Divide both sides by (t -1):

r= [tex]\bf{\frac{3t}{t-1} }[/tex]

Additional:

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