Решение уравнений:

1. a) $$3x - 6 = x + 4$$
   $$3x - x = 4 + 6$$
   $$2x = 10$$
   $$x = rac{10}{2}$$
   $$x = 5$$
   Ответ: x = 5
2. б) $$x + (x - 20) + 3x = 180$$
   $$5x - 20 = 180$$
   $$5x = 180 + 20$$
   $$5x = 200$$
   $$x = rac{200}{5}$$
   $$x = 40$$
   Ответ: x = 40
3. в) $$5x - 22 = 2x + 14$$
   $$5x - 2x = 14 + 22$$
   $$3x = 36$$
   $$x = rac{36}{3}$$
   $$x = 12$$
   Ответ: x = 12
4. г) $$x + (x + 24) = 5x$$
   $$2x + 24 = 5x$$
   $$5x - 2x = 24$$
   $$3x = 24$$
   $$x = rac{24}{3}$$
   $$x = 8$$
   Ответ: x = 8