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2x + y = 18
y = 4x -12

2x + y = 18 y = 4x -12-example-1

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Answer:

Step-by-step explanation:

By putting the value of y (4x - 12) from equation (2) in equation (1)

We get: 2x + (4x - 12) = 18

6x - 12 = 18

6x = 18 + 12

6x = 30

x = 30/6

Value of x is: x = 5

Now, by putting x = 5 in equation (2)

We get: y = 4(5) - 12

y = 20 - 12

Value of y is: y = 8

So, x = 5 and y = 8

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