Problem

{x+2y=63xy=4

Answer

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Answer

Final Answer: x=2,y=2

Steps

Step 1 :{x+2y=63xy=4

Step 2 :{3(x+2y)=3(6)2(3xy)=2(4)

Step 3 :{3x+6y=186x2y=8

Step 4 :Add the two equations to eliminate y:

Step 5 :(3x+6y)+(6x2y)=18+8

Step 6 :9x+4y=26

Step 7 :9x=264y

Step 8 :x=264y9

Step 9 :Substitute the value of x in the first equation:

Step 10 :264y9+2y=6

Step 11 :264y+18y=54

Step 12 :14y=28

Step 13 :y=2814

Step 14 :y=2

Step 15 :Substitute the value of y in the equation for x:

Step 16 :x=264(2)9

Step 17 :x=2689

Step 18 :x=189

Step 19 :x=2

Step 20 :Final Answer: x=2,y=2

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