Odpowiedź:
[tex] \frac{3}{4} x = 1 \frac{1}{8} \: \: \: | \times \frac{4}{3} \\ x = \frac{9}{8} \times \frac{4}{3} \\ x = \frac{3}{2} = 1 \frac{1}{2} [/tex]
[tex] - x - 8 = - 3 \\ - x = - 3 + 8 \\ - x = 5 \: \: \: | \div ( - 1) \\ x = - 5[/tex]
[tex]3(1 - x) + 2 = - 7 \\ 3 - 3x + 2 = - 7 \\ - 3x = - 7 - 2 - 3 \\ - 3x = - 12 \: \: \: | \div ( - 3) \\ x = 4[/tex]
[tex]5 - (3 - 4x) = 5(1 - x) \\ 5 - 3 + 4x = 5 - 5x \\ 4x + 5x = 5 + 3 - 5 \\ 9x = 3 \: \: \: | \div 9 \\ x = \frac{3}{9} = \frac{1}{3} [/tex]
[tex]5 - 2(x + 2) = 9 \\ 5 - 2x - 4 = 9 \\ - 2x = 9 + 4 - 5 \\ - 2x = 8 \: \: \: | \div ( - 2) \\ x = - 4[/tex]
[tex] - x + 5 = - 2 \\ - x = - 2 - 5 \\ - x = - 7 \: \: \: | \div ( - 1) \\ x = 7[/tex]
[tex] - 2x - 7 = 11 \\ - 2x = 11 + 7 \\ - 2x = 18 \: \: \: | \div ( - 2) \\ x = - 9[/tex]
[tex]2(3x - 4) = 10x \\ 6x - 8 = 10x \\ 6x - 10x = 8 \\ - 4x = 8 \: \: \: | \div ( - 4) \\ x = - 2[/tex]
[tex] - 2(4 - 5x) = 3(4x + 3) \\ - 8 + 10x = 12x + 9 \\ 10x - 12x = 9 + 8 \\ - 2x = 17 \: \: \: | \div ( - 2) \\ x = - 8 \frac{1}{2} [/tex]
[tex] \frac{y}{3} + \frac{y}{2} = \frac{1}{6} \: \: \: | \times 6 \\ 2y + 3y = 1 \\ 5y = 1 \: \: \: | \div 5 \\ y = \frac{1}{5} [/tex]
