błagam o pomoc !!! jestem w 1 gim mamy ten temat a ja nic nie rozumiem !!!!

1)   - 2,5x + 1 = - 4  - 2,5x =  -4 -1  - 2,5x = - 5 I : (- 2,5) x = 2 2) - 2 = 8 - 5x  - 2 - 8 = - 5x - 10 = - 5x I : (-5) x = 2 3) - 10x + 4 = 12 - 10x = 12 - 4 - 10x = 8 I : ( -10) x = - 8/10 x = - 0,8 4) 1 - 2 i 1/2 x = 4 - 2 i 1/2 x = 4 - 1 - 2 i 1/2 x = 3 - 5/2 x = 3 I * ( - 2/5) x = - 6/5 x = - 1 i 1/5     lub      - 12/10 = - 1,2 5) 5x - 2 = 10 5x = 10 + 2 5x = 12 I : 5 x = 2,4 6) 5 (x - 2) - 2 = 5x - 12 5x - 10 - 2 = 5x - 12 5x - 12 = 5x - 12 5x - 5x = - 12 + 12          0 = 0 7) 8 - 4 (3+ x) = - 12 + 4x 8 - 12 - 4x = - 12 + 4x - 4x - 4x = - 12 - 8 + 12 - 8x = - 8 I : ( - 8) x = 1 8) x - 5 = 5 - 3x x + 3x = 5 + 5 4x = 10 I : 4 x = 2,5 9) 4 - ( 1 - 3x) = - 5 ( x + 1) 4 - 1 + 3x = - 5x - 5 3x + 5x = - 5 - 4 + 1 8x = - 8 I : 8 x = - 1 Myślę, że pomogłam :D