Solve the given pair of linear equations 3x – y = 3 and x + y = 9
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Given equations are :
3x – y = 3 …(i)
9x – 3y = 9 …(ii)
From eqn (i), y = 3x – 3 …(iii)
On substituting y = 3x – 3 in eqn (ii), we get,
⇒ 9x – 3(3x – 3) = 9
⇒ 9x – 9x + 9 = 9
⇒ 9 = 9
This equality is true for all values of x, therefore given pair of equations have infinitely many Solution.
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