SOLUTION: esay question: solve the simultaneous equations. y=7x+11 and y=x^2+5x+8

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Question 874678: esay question: solve the simultaneous equations.
y=7x+11 and y=x^2+5x+8
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2-2x-3=0, yes; it is easy. Why need help?

That quadratic found just by equating y expressions and simplifying. Now it's factorable.
%28x%2B1%29%28x-3%29=0.

Solution of this for x is -1 OR 3.
What are the corresponding y values? Where were you stuck? Did you find the x solutions?