b)
[tex]2x - (3 - 2x) = 5 + x - x \\ 2x - 3 + 2x = 5 \\ 4x = 8 \\ x = 2[/tex]
c)
[tex]5(x - 2) + (3 + x) = 6x - 7 \\ 5x - 10 + 3 + x = 6x - 7 \\ 6x - 6x = - 7 + 7 \\ L = P[/tex]
d)
[tex] - (x + 1) + 8x = 5x - 9 \\ - x - 1 + 8x = 5x - 9 \\ 2x = - 8 \\ x = - 4[/tex]
a)
[tex] \frac{12 - x}{4} = \frac{x + 4}{12} \\ 12(12 - x) = 4(x + 4) \\ 144 - 12x = 4x + 16 \\ - 16x = - 128 \\ x = 8[/tex]
b)
[tex] \frac{3x - 2}{4} = \frac{4x - 5}{3} \\ 3(3x - 2) = 4(4x - 5) \\ 9x - 6 = 16x - 20 \\ 9x - 16x = - 20 + 6 \\ - 7x = - 14 \\ x = 2[/tex]
