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3 years ago

5x+30=7x+20 Bbbbnnvvvcvhbx

Mathematics

2 answers:

Ierofanga [76]3 years ago

7 0

“ x “ equals 5 because 5(5)+30 = 55 and 7(5)+ 20 = 55 so it’s x=5

ollegr [7]3 years ago

3 0

X=5 is the answer for this problem

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¿Tiene una pregunta específica o como ejemplo de pregunta con números?

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3 years ago

Hi please help and show how you got to your answer! Thank you

Phoenix [80]

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3 years ago

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Find a solution to the linear equation −2x−2y=8 by filling in the boxes with a valid value of x and y.Provide your answer below:

inna [77]

Given

$-2x-2y=8$

To find a solution for the linear equation, the first step is to write the equation in slope-intercept form:

-Pass the x-term to the right side of the equation by applying the opposite operation to both sides of the equal sign:

$\begin{gathered} -2x+2x-2y=8+2x \\ -2y=2x+8 \end{gathered}$

-Divide both sides by -2:

$\begin{gathered} \frac{-2y}{-2}=\frac{2x}{-2}+\frac{8}{-2} \\ y=-x-4 \end{gathered}$

Once you have expressed the equation of the line in slope-intercept form, replace it with any value for x and calculate the corresponding value of y, for example, x=2

$\begin{gathered} y=-(2)-4 \\ y=-2-4 \\ y=-6 \end{gathered}$

One solution for the linear equation is x=2 and y=-6, you can check the solution by replacing the values on the original equation, with both values the result should be 8:

$\begin{gathered} -2x-2y \\ -2\cdot2-2\cdot(-6) \\ -4+12=8 \end{gathered}$

As you can see the values are a valid solution for the linear equation.

So the solution is:

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1 year ago