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Neko [114]
4 years ago
10

Make r the subject of the formula t=

r-3}" alt="\frac{r}{r-3}" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
Gnoma [55]4 years ago
3 0

Answer:

r=\frac{3t}{t-1}

Step-by-step explanation:

So we have the formula:

t=\frac{r}{r-3}

And we want to make r the subject of the formula.

So, first, let's multiply both sides by (r-3). The right will cancel. So:

t(r-3)=r

Distribute the t:

rt-3t=r

Subtract rt from both sides. The left cancels:

-3t=r-rt

Factor out an r from the right:

-3t=r(1-t)

Divide both sides by (1-t). The right cancels:

\frac{-3t}{1-t}=r

Simplify the negatives:

\frac{3t}{t-1}=r

Flip:

r=\frac{3t}{t-1}

And we're done!

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jolli1 [7]
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