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If x+y=4 and x-y=k, what does x equal?

If x+y-z=8 and x-y+z=12 then x=

If x=3b and y=2/6b+4, what is x in terms of y?

Sagot :

Abidemiokinidn

The values of x are (4+k)/2 and 10. The value of the variable x in terms of y is x = y -4

System of equations

These are equations that contains several equations and unknowns.

Given the following system of equation

x+y=4

x-y=k

Add both equation

x + x = 4 + k

2x = 4+k

x = (4+k)/2

For the equation  

x+y-z=8  

x-y+z=12

Add both equations

2x = 8 + 12

2x = 20

x = 10

The value of x from the equation is 10

Given the equations

x=3b

y = 2/6b+4,

______________

b = x/3

Substitute

y = 2/6(x/3)+4

y = x + 4

x = y - 4

Hence the value of the variable x in terms of y is x = y -4

Learn more on system of equation here; https://brainly.com/question/25976025

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