Question

solve this pair of linear equation by substitution method 3x-y =3 and 9x - 3y =9​

Answer 1

3x−y=3

x=

3

3+y

And , 9x−3y=9⟶(i)

Substituting the value of x in equation ⟶(i)

9(

3

3+y

)−3y=9

⇒9+3y−3y=9

∴ It would be satisfied the value of y and x.

So, It has infinitely many solutions.

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