Odpowiedź:
1.
[tex]2(2x - 1) = 4x + 3 - 2x \\ 4x - 2 = 2x + 3 \\ 4x - 2x = 3 + 2 \\ 2x = 5 \: \: \: \: \div 2 \\ x = \frac{5}{2} \\ x = 2 \frac{1}{2} [/tex]
2.
[tex] \frac{4x - 3 + 1}{3} = \frac{5x + 2x - 3}{4} \: \: \: \: \: \: \: \: \times 12 \\ 4(4x - 3 + 1) = 3(5x + 2x - 3) \\ 16x - 12 + 4 = 15x + 6x - 9 \\ 16x - 15x - 6x = - 9 + 12 - 4 \\ - 5x = - 1 \: \: \: \: \div - 5 \\ x = \frac{1}{5} [/tex]
3.
[tex]3(x + 1) = 2(4x - 7) \\ 3x + 3 = 8x - 14 \\ 3x - 8x = - 14 - 3 \\ - 5x = - 17 \: \: \: \: \div - 5 \\ x = \frac{17}{5} \\ x = 3 \frac{2}{5} [/tex]
