How do you solve #8/12=r/(r+1)#?

Answer 1

Cross multiply, then solve as usual.

Multiply by cross.

#8(r+1)=12r#

Extend the side on the left.

#8r+8=12r#
Subract #8r# from both sides.
#8=12r-8r#

Make it simple.

#8=4r#
Divide both sides by #4#.
#8/4=r#

Make it simple.

#2=r#

Change positions.

#r=2#
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Answer 2

#r=2#

#8/12=r/(r+1)# #=> 2/3=r/(r+1)#
#=>3r=2(r+1)# #=> 3r=2r+2# #=> r=2#
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Answer 3

To solve the equation ( \frac{8}{12} = \frac{r}{r+1} ), cross multiply to get ( 8(r+1) = 12r ). Then distribute and solve for ( r ). The solution is ( r = 4 ).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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