If
, then value of y is ___________
Given: 
To Find: Value of y
From the matrix representation we get,
x + 2y = 5 and 2x + y = 4
Eliminating x from both the equations we get,
⇒ 2x + y – 2x – 4y = 4 – 10
⇒ -3y = -6
⇒ y = 2
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