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3 years ago

Solve for X: x + 17 = 2(5x - 23)

Mathematics

2 answers:

Sergio039 [100]3 years ago

7 0

Answer:

7; brainliest please!

Step-by-step explanation:

dsp733 years ago

5 0

Answer:

x=+7

Step-by-step explanation:

We move all terms to the left:

x+17-(2(5x-23))=0

We calculate terms in parentheses: -(2(5x-23)), so:

2(5x-23)

We multiply parentheses

10x-46

Back to the equation:

-(10x-46)

We get rid of parentheses

x-10x+46+17=0

We add all the numbers together, and all the variables

-9x+63=0

We move all terms containing x to the left, all other terms to the right

-9x=-63

x=-63/-9

x=+7

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Answer:

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Step-by-step explanation:

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3 years ago

Find the quotient and any excluded values. (x + 5/x^2 + 9x + 20)/(x^2-16/x-4)

Wittaler [7]

By (x + 5/x^2 + 9x + 20) you apparently meant the following:

x+5
----------------------
x^2 + 9x + 20

and by

(x^2-16/x-4)
x^2-16
you apparently meant ---------------
x - 4

Please use additional parentheses for clarity.

Dividing,

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---------------------- * ---------------
x^2 + 9x + 20 x-4

Now, x^2 + 9x + 20 factors into (x+4)(x+5), so what we have now is

(x+5)(x+4)
------------------------- = 1 This is true for all x, so there are no exclusions.
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3 years ago