Find the value of k, if \(x = 2, y = 1\) is a solution of the equation \(2x + 3y = k\).
7
Plug \(x = 2\) and \(y = 1\) into \(2x + 3y = k\).
Compute left side: \(2(2) + 3(1) = 4 + 3 = 7\). For this to be a solution, \(k\) must equal 7.