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Substitution method 3x-y=3 9x-3y=9

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Substitution method 3x-y=3 9x-3y=9

Posted by Yash Bhardwaj 6 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 5 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
{tex}\Rightarrow{/tex} 9x - 9x + 9 = 9
{tex}\Rightarrow{/tex} 9 = 9
which is true. Therefore, equation (1) and (2) have infinitely many solutions.

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CBSE > Class 10 > Mathematics