Odpowiedź:
e)
[tex]5x - 9x = 5 - 21 \\ - 4x = - 16 \\ x = 4[/tex]
f)
[tex]6x - x = 7 + 23 \\ 5x = 30 \\ x = 6[/tex]
g)
[tex]4x + 2x = 23 + 17 \\ 6x = 40 \\ x = 6 \frac{4}{6} \\ x = 6 \times \frac{2}{3} [/tex]
h)
[tex]7x - 5x = 24 - 1 \\ 2x = 23 \\ x = 11.5[/tex]
i)
[tex]9x - 3x = 18 - 9 \\ 6x = 9 \\ x = 1 \frac{3}{6} \\ x = 1 \frac{1}{2} [/tex]
Proszę o naj :)
