so well solve it like this !
(6*3)x + 4 + 2x
=18x + 4 + 2x ( 6 and 3 have been multiplied )
=18x + 2x + 4 (arranged in same values together )
=20x+4 ANSWER ( 18x and 2x have been added )
You're welcome....
That's Standard Southern American English for 'You're welcome"