2 years ago

Q=3(r+1)/r Make r the subject of the formula

Mathematics

1 answer:

DiKsa [7]2 years ago

8 0

Distribute the 3 to the parentheses. Q=3r+3/r

Next multiply both sides by r to get rid of the division sign.

Qr=3r+3

Subtract 3r on both sides and you get Qr-3r=3

Since both numbers have an r in it, we can factor out the r

r(Q-3)=3

Then we divide Q-3 on both sides

r=3 / (Q-3)

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