3x y 3 9x 3y 9 by elimination method
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Solve by elimination method 3x-y=3; 9x-3y=9
Answered by admin @
Answer:
Explanation:
Given :-
3x - y = 3
9x - 3y = 9
Solution :-
⇒ 3x - y = 3 ... (i)
⇒ 9x - 3y = 9 ... (ii)
From equation (i), we get
⇒ y = 3x - 3 ... (iii)
Putting this value in equation (ii), we get
⇒ 9x - 3(3x - 3) = 9
⇒ 9x - 9x + 9 = 9
⇒ 9 = 9
Hence, This is always true.
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