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3 years ago

Solve the system using the substitution method 6x - 2y = -4 y= 3x + 2

Mathematics

2 answers:

Oksana_A [137]3 years ago

4 0

Answer:

x= -0.66+0.33

Step-by-step explanation:

you already have what y equals, so the next step is to plug in the solution for y into 6x - 2y = - 4

-plug in y = 3x + 2 into 6x - 2y = - 4 through the y variable

-making the equation now 6x - 2(3x + 2) = - 4

-now solve for x by distributing -2 to 3x and +2

6x - 6x - 4 = - 4 ------> - 4 = - 4

6x - 2y = - 4 -----> 6x = - 4 + 2y -----> x = - 0.66 + 0.33

Anit [1.1K]3 years ago

3 0

Answer:

Step-by-step explanation:

6x - 2y = -4

y= 3x + 2

We see that y = 3x + 2 so we can use that value of Y everytime we see i in the other equation.

6x - 2(3x +2) = -4

Now usually we'd we simply solve for X.

6x - 6x -4 = -4

This clearly does not work as we cannot get rid of X

Therefore, this system of equations has no solution we can find through substitution

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