1) x+4=x+2

2) 2x-6=3x

3) 5x+6x

4) 3x-5=-2x+7+5x-12

5) x-1+3x-5 = (x-5) - (x-3) + (x+1)

1) x+4=x+2

0 = - 2

Уравнение не имеет корней

2) 2x-6=3x

2x - 3x = 6

-x = 6

x = - 6

3) 5x+6x = 11x

4) 3x-5=-2x+7+5x-12

3x + 2x - 5x = - 12 + 7 + 5

0 = 0

x - любое число

5) x-1+3x-5 = (x-5) - (x-3) + (x+1)

4x - 6 = x - 5 - x + 3 + x + 1

4x - 6 = x - 1

4x - x = - 1 + 6

3x = 5

x = 1 2/3