a)
[tex]3(2 - 4) = 16 + 2x \\ 6 - 12 = 16 + 2x \\ - 6 - 16 = 2x \\ - 22 = 2x | \div 2 \\ x = - 11[/tex]
b)
[tex] \frac{1}{4} (32 + 1) - 2 = 2x - 5 \\ 8 + \frac{1}{4} - 2 = 2x - 5 | \times 4 \\ 32 + 1 - 8 = 8x - 20 \\ 25 = 8x - 20 \\ 45 = 8x | \div 8 \\ x = 5 \frac{5}{8} [/tex]
c)
[tex]2(x + 6) + 2 + 5(x - 2) - 3(x - 4) = 0 \\ 2x + 12 + 2 + 5x - 10 - 3x + 12 = 0 \\ 4x + 16 = 0 \\ 4x = - 16 | \div 4 \\ x = - 4[/tex]
