exam Maths Puzzle Numerical Ability

can u plz help me! i really need help with math! hurry!

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exam Other Question

I have this problem which I showed you the name of the book up above, but just in case you don't have the book here is how the problem goes:
I need to give the coordinates of the Could someone help me solve this using the elimination method????
5r-6s=13
6r=5s+40