Substitution method3x-y=39x-3y=9

1.	Substitution method3x-y=39x-3y=9
Answer» 3x - y = 39x - 3y = 9The given pair of linear equations is\xa03x - y = 3..............(1)9x - 3y = 9.............(2)From equation(1),\xa0y = 3x - 3...................(3)9x - 3(3x - 3) = 9{tex}\\Rightarrow{/tex}\xa09x - 9x + 9 = 9{tex}\\Rightarrow{/tex}\xa09 = 9which is true. Therefore, equation (1) and (2) have infinitely many solutions.

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