a)
[tex] - 5(2x - 4) + 3 = 4x + (15 - x) \\ - 10x + 20 + 3 = 4x + 15 - x \\ - 10x - 4x +x= 15 - 23 \\ - 13x = - 8 \\ x = - \frac{8}{13}[/tex]
b)
[tex] \frac{ - 4 + x}{5} = \frac{5x + 3}{3} \\ 3( - 4 + x) = 5(5x + 3) \\ - 12 + 3x = 25x + 15 \\ 3x - 25x = 15 + 12 \\ - 22x = 27 \\ = - \frac{27}{22} [/tex]
c)
[tex] \frac{x - 6}{2} - \frac{3 - x}{4} = 1 - 3x \\2(x - 6) - (3 - x) = 4 - 12x \\ 2x - 12 - 3 + x = 4 - 12x \\ 3x - 15 = 4- 12x \\ 3x + 12x = 4 + 15 \\ 15x = 19 \\ x = \frac{19}{15} [/tex]
Myślę że pomogłem ;)
