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Y=2x when 3x + 3y =18

User RSolberg
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You have a system of two linear equations with two variables, x and y:

1. y = 2x

2. 3x + 3y = 18

To solve for x and y, you can use the substitution method. Since we already know y in terms of x from equation 1, we can substitute this expression for y into equation 2:

3x + 3(2x) = 18

Now, simplify and solve for x:

3x + 6x = 18

9x = 18

x = 18/9

x = 2

Now that we have the value of x, we can substitute it back into equation 1 to find the value of y:

y = 2x

y = 2(2)

y = 4

So, the solution to the system of equations is x = 2 and y = 4.

User Miro Bucko
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