(8*a + 1)*-6 + (3*a + 7)*-2
(8*a + 1)*(-6) + (3*a + 7)*(-2)
/ 10\ 1*|a + --| \ 27/
1*(a + 10/27)
-20 - 54*a
-20.0 - 54.0*a
2*(-10 - 27*a)