X+3(x+2(x-6)+6)+11/4
x+3(x+2(x-6)+6)+11/4 =
x + 3x + 6(x - 6) + 18 + 11/4 =
x + 3x + 6x - 36 + 18 + 11/4 =
10x - 18 + 11/4 =
10x - 72/4 + 11/4 =
10x - 61/4