Which expression is equivalent to (18x + 9k) + (2x + 6k)?
O 16x+3%
O 20x+ 15%
O 20X+ 16k
O 36x+54K

[tex](18x + 9k) + (2x + 6k)[/tex]
[tex]18x + 2x = 20x[/tex]
[tex]9k + 6k = 15k[/tex]
[tex]20x + 15k[/tex]