To simplify the expression 3k + 9 - 2k + 11, we need to combine like terms and simplify the expression.
The first step is to combine the constants (numbers without variables)
3k + 9 - 2k + 11 = 3k - 2k + 9 + 11
The next step is to combine the variable k
3k - 2k = k
Now we have
k + 9 + 11 = k + 20
The final simplified expression is k+20