Substitution method 3x-y=3 9x-3y=9
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Sia ? 5 years, 11 months ago
3x - y = 3
9x - 3y = 9
The given pair of linear equations is
3x - y = 3..............(1)
9x - 3y = 9.............(2)
From equation(1),
y = 3x - 3...................(3)
9x - 3(3x - 3) = 9
⇒ 9x - 9x + 9 = 9
⇒ 9 = 9
which is true. Therefore, equation (1) and (2) have infinitely many solutions.
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