Explicație pas cu pas:
a)
[tex]|7x-1| = 6[/tex]
[tex]7x - 1 = 6 = > 7x = 7 \\ x = 1[/tex]
[tex]7x - 1 = - 6 = > 7x = - 5 \\ x = - \frac{5}{7} [/tex]
b)
[tex]|4x+3| = 5[/tex]
[tex]4x+3 = 5 = > 4x = 2 \\ x = \frac{1}{2} [/tex]
[tex]4x+3 = - 5 = > 4x = - 8 \\ x = - 2[/tex]
c)
[tex]|5x+1| = 4[/tex]
[tex]5x+1 = 4 = > 5x = 3 \\ x = \frac{3}{5} [/tex]
[tex]5x+1 = - 4 = > 5x = - 5 \\ x = - 1[/tex]
