order pairs

Have you tried graphing the two equations, to see which lines they are? (You really just have to find the y-intercept and check that the slope makes sense.)

Then pick the point where those two lines cross.

If you need more help, please show the work you have done, so we can check and help you move on from there.
 
I don't understand why you would call that "sloppier". A tiny bit "slower" perhaps but I would consider it a perfectly reasonable way to solve the equation.
 
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