(a) 3 - x/8 = 5x/2 - 2(x-4)/3 + 5
72-3x=60x-16x+64+120
x=-112/47
(b) 7(x-6) - 6(x+3) = 5 (x-6) - 2(3+2x)
No solution
(c) 三次根号下(5x + 9) = 6
5x+9=216
x=41.4