Solve the system of equations using the substitution method. x=3+12y −2x−y=3

x = -33/25

y = -9/25

Step-by-step explanation:

We have the equations

x = 3 + 12y (i)

-2x-y = 3 (ii)

To use the substitution method. We produce equation (i) in equation (ii)

So, we have:

-2 (3 + 12y) -y = 3

Now we clear for y'

-6-24y-y = 3

-25y = 9

y = -9/25

Now we introduce the value of y into equation (i) and get the value of x

x = 3 + 12 (-9/25)

x = -33/25

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