I will show you how to solve by elimination. You have two equations. The goal of this method is to cancel out one of the variables.
3y=x-1
x-2y=2 ----> 2=x-2y (just flipping it around visually)
If we align the two equation and subtract them...
3y=x-1
-(2=x-2y) "x is canceled out"
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3y-2=-1+2y "one variable equation now"
y=1
Plug in 1 for y into any equation to get corresponding x value.
3y=x-1
3(1)=x-1
x=4
Answer: (4,1)
