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Załącznik klasa 7 matematyka​

Załącznik Klasa 7 Matematyka class=

Odpowiedź :

a)

[tex]4x - 3 = 3x + 5 \\ x = 8[/tex]

b)

[tex]5x + 2 = 7 - 3x \\ 8x = 5 \\ x = \frac{5}{8} [/tex]

c)

[tex]3(x - 1) = 0 \\ 3x - 3 = 0 \\ 3x = 3 \\ x = 1[/tex]

d)

[tex] - 6(x + 1) = 24 \\ - 6x - 6= 24 \\ - 6x = 30 \\ x = - 5[/tex]

e)

[tex] - 7(x - 2) = 3x - 1 \\ - 7x + 14 = 3x - 1 \\ - 10x = - 15 \\ x = \frac{15}{10} = 1 \frac{5}{10} = 1.5[/tex]

f)

[tex]4(x - 1) = 6(1 + x) \\ 4x - 4 = 6 + 6x \\ - 2x = 10 \\ x = - 5[/tex]