Odpowiedź:
[tex]6. \: a) \: 3 \times 2x = 6x \\ b) \: 4x \times 6 = 24x \\ c) \frac{2}{7} x \times 7 = 2x \\ d) \frac{3}{5} x \times \frac{1}{3} = \frac{1}{5} x \\ e)2x \times ( - 8) = - 16x \\ f)( - 2) \times 0.4x = - 0.8x \\ g)( - \frac{1}{9}x) \times ( - 2) = \frac{2}{9} x \\ h)27x \div 3 = 9x \\ i)8x \div ( - 2) = - 4x[/tex]
[tex]7. \: 3x \times ( - 5) = - 15x \\ 3 \times x \times ( - 5) = - 15x \\ ( - 5) \times x \times 3 = - 15x \\ 3 \times ( - 5) \times x = - 15x \\ ( - 5) \times 3 \times x = - 15x [/tex]
[tex]8. \: \frac{1}{5} u \times 5 = u \\ 4x \times \frac{1}{4} = x \\ - 8y \times \frac{5}{8} = - 5y \\ 0.6z \div 2 = 0.3z \\ [/tex]
[tex]3x \times 5 = 15x \\ - 7y \div ( - 7) = y \\ - 8z \div ( - 4) = 2z[/tex]
[tex]3x \times 5 = 15x \\ - 7y \div ( - 7) = y \\ - 8z \div ( - 4) = 2z \\ \frac{1}{6} u \times 6 = u \\ - \frac{1}{3} v \times( - 3) = v[/tex]
