1: - (5x + 7) + 1 = - 5x - 5

2: 4x - 7 + 2x = 2 (3x - 3) - 1

3: - 4x - 2 = - 2 (1 - 4x)

1. - 5x - 7 + 1 = - 5x - 5

-5x - 6 = - 5x + 5

-5x - 6 + 6 = - 5x + 5 + 6

-5x = - 5x + 11

-5x + 5x = - 5x + 5x + 11

0 does not equal 11 so there is not solution to number 1 or you can write 0 does not equal 11.

2. 4x - 7 + 2x = 2 (3x-3) - 1

6x - 7 = 6x - 6 - 1

6x - 7 + 7 = 6x - 7 + 7

(6x = 6x) / 6

x = x; this is an identity which means x can be any real number and the value will still be equal.

3. - 4x - 2 = - 2 (1 - 4x)

-4x - 2 = - 2 + 8x

-4x - 2 + 2 = - 2 + 2 + 8x

(-4x = 8x) / - 4

x = - 2x; there is no real answer