2. If 2x+y =6 and x+2y=6 then
find x+y and x-y.
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answer is in the pic.
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Step-by-step explanation:first,write the equations as 2x+y=6 - (¡) and x+2y=6 - (ii) . Then multiply first by ×2 and the second equations with ×1 . After multiplying subtract them and you will get 3x=6 and then you find x=2 from that you can find value of y that is 4. so now x+y=4 and x-y=0.
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