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How do you solve #5(9-x)=4(x+18)#?

Answer 1

Julia Adams

#x=-3#

On the left, we can distribute the #5#, and the right we can distribute the #4#. After doing this, we get

#45-5x=4x+72#

Next, let's subtract #45# from both sides to get

#-5x=4x+27#

Next, we can subtract #4x# from both sides to get

#-9x=27#

Our last step would be to divide both sides by #-9#. We get

#x=-3#

Hope this helps!

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Answer 2

Genesis Allen

To solve the equation 5(9-x) = 4(x+18), first distribute the terms:

5 * 9 - 5 * x = 4 * x + 4 * 18

Then, simplify the equation:

45 - 5x = 4x + 72

Next, move variables to one side and constants to the other:

45 - 72 = 4x + 5x

Now, combine like terms:

-27 = 9x

Finally, solve for x:

x = -27 / 9

x = -3

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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.