Here, this is a linear equation in one variable because only one variable is there, y. We need to find the solution i.e the value of y.
Given, equation:

We need to find y, So let's isolate y in any one side of the equation. Before that, let's open the parentheses.


Now, let's add 2y to both sides, So that -2y on the left hand side gets cancel.


Flipping the equation for easy calculation,

Solving further,



Hence, we are done !!
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