The sum of two numbers, x and y, is 12. the difference of x and two times y is 6. what are the values of x and y?

x = 8, y = 4

x = 10, y = 2

x = 18, y = -6

x = 20, y = -8

The answer is: x = 10, y = 2

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Work:

x + y = 12
(10) + (2)+  = 12
Correct

x - 2y = 6
(10) - 2(2) = 6
10 - 4 = 6
Correct

I’m going to infer you said parallel.solve for yy= -1/2x+7/4lines that are parallel have the same slope, different y intercept.so we know m is -1/2then from there solve for y intercept.