The solution of the given equation is (3,6). The correct option is B.(3,6)
[tex]y=x+3.......(1)\\4x+y=18.....(2)[/tex]
putting the value of y from equation (1) in equation (2) , we get
[tex]4x+x+3=18\\[/tex][tex]5x=18-3\\5x=15\\x=3[/tex]
substitute the value of x=3 in equation (1) we get,
[tex]y=3+3\\y=6[/tex]
Hence, the solution of given equation is (3,6).
So, the correct option is B.
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