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2 years ago

I dont get this please help me on this thanks

Mathematics

2 answers:

marishachu [46]2 years ago

7 0

Answer:

x=-2

Step-by-step explanation:

-4(x-7)=36

divide both sides by four

x-7=-9

move constant to the right and change its sign

x=-9+7

calculate the sum

x=-2

iris [78.8K]2 years ago

7 0

Answer:

X=-2

Step-by-step explanation:

1. -4(x-7)=36

Devide both side of the equation by -4

2. X-7=-9

X-7=-9

x=-9+7

Move constant to the right side and change its sign

3. x=-9+7

Calculate the sum, And You Will Get x=-2

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2 years ago

What’s the answer to n

Ksju [112]

Hello there!

I see you got some work done already, but I guess you just wanted to double check! :)

3n + 8 = 20

3n = 20 -8 (Subtract 8 on both sides).

3n = 12 (Combine like terms).

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There you have your answer! :D

Hope this helped!

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7 0

3 years ago

If three times a number added to 8 is divided by the number plus 7, the result is four thirds. Find the number.

Marina86 [1]

9514 1404 393

Answer:

4/5

Step-by-step explanation:

The wording is ambiguous, as it often is when math expressions are described in English. We assume you intend ...

$\dfrac{3n+8}{n+7}=\dfrac{4}{3}\\\\3(3n+8)=4(n+7)\qquad\text{multiply by $3(n+7)$}\\\\9n+24=4n+28\qquad\text{eliminate parentheses}\\\\5n=4\qquad\text{subtract $4n+24$}\\\\\boxed{n=\dfrac{4}{5}}\qquad\text{divide by 5}$

The number is 4/5.

5 0

3 years ago

I dont get this please help me on this thanks​

I dont get this please help me on this thanks