a)3x+5=-9
3x=-9-5=-14
[tex]x = - \frac{14}{3} [/tex]
b)19-3(2x-1)=2
-3(2x-1)=2-19=-17
[tex]2x - 1 = \frac{ - 17}{ - 3} = \frac{17}{3} \\ \\ 2x = \frac{17}{3} + 1 = \frac{20}{3} \\ \\ x = \frac{ \frac{20}{3} }{2} = \frac{20}{3 \times 2} = \frac{20}{6} = \frac{10}{3} [/tex]
c)4(3x+8)+6(2x-3)+5=5(2x-3)+2x+30
12x+32+12x-18+5=10x-15+2x+30
24x+19=10x-15+2x+30=12x+15
24x+19-12x=15
12x+19=15
12x=15-19=-4
[tex]x = - \frac{4}{12} = - \frac{1}{3} [/tex]
