SOLUTION: What is 3x + Y=5 Y=x-7? And how do you work it out

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Question 565207: What is 3x + Y=5
Y=x-7? And how do you work it out
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
substituting the value of Y from the 2nd eqn into the 1st eqn ___ 3x + (x - 7) = 5 ___ 4x = 12

solve for x, and then substitute back to find Y