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3 years ago

3x + y = -3 y = x + 5 Substitution pls show solving

Mathematics

2 answers:

Dennis_Churaev [7]3 years ago

7 0

Answer:

( -2, 3 )

Step-by-step explanation:

3x + y = -3

y = x + 5

Since "y" has been given to us, all we need to do is substitute.

3x + x + 5 = -3

Combine like terms

4x + 5 = -3

Subtract 5 onto both sides

4x + 5 - 5 = -3 - 5

4x = -8

Divide by 4 into both sides to isolate the variable

4x/4 = -8/4

x = -2

Now that we have x ( -2 ), we can substitute that to get what y is.

y = x + 5

y = -2 + 5

y = 3

( x, y ) ---> ( -2, 3 )

Hope this helped!

Have a supercalifragilisticexpialidocious day!

dem82 [27]3 years ago

4 0

3x + y = -3
Substitute y = x + 5 in the ‘y’ spot in the 3x + 7 = -3 equation

3x + y = -3
3x + x + 5 = -3
combine liked terms
4x + 5 = -3
-5 on both sides
4x = -8
/4 on both sides
x = -2

Answer:
x = -2

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Step-by-step explanation:

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3 years ago

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sertanlavr [38]

Answer:

Final answer is $g\left(x\right)\cdot f\left(x\right)=\frac{\left(x-6\right)}{2x\left(x+3\right)}$ .

Step-by-step explanation:

given functions are $f(x)=x-6$ and $g\left(x\right)=\frac{1}{2x\left(x+3\right)}$ .

Now we need to find about what is the value of $g\left(x\right)*f\left(x\right)$ .

$g\left(x\right)*f\left(x\right)$ simply means we need to multiply the value of $f(x)=x-6$ and $g\left(x\right)=\frac{1}{2x\left(x+3\right)}$ .

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3 years ago

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Answer:

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Step-by-step explanation:

I hope this helps you :)

-KeairaDickson

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3 years ago

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-Dominant- [34]

Answer:

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Step-by-step explanation:

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3 years ago

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