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12RYBKA21ON
Rozwiązane

Rozwiąż równania
A) 5x-2=2x+4
B) x+3=6-4x
C) -(3x+1)=8
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Odpowiedź :

MARTYNA125123ON

Odpowiedź:

[tex]a)5x - 2 = 2x + 4 \\ 5x - 2x = 4 + 2 \\ 3x = 6 | \div 3 \\ x = 2[/tex]

[tex]b)x + 3 = 6 - 4x \\ x + 4x = 6 - 3 \\ 5x = 3 | \div 5 \\ x = \frac{3}{5} \\ [/tex]

[tex]c) - (3x + 1) = 8 \\ - 3x - 1 = 8 \\ - 3x = 9 | \div ( - 3) \\ x = - 3[/tex]

LEA3ON

A)

[tex]5x - 2 = 2x + 4[/tex]

[tex]5x - 2x = 4 + 2[/tex]

[tex]3x = 6[/tex]

[tex]x = 6 \div 3 = 2[/tex]

B)

[tex]x + 3 = 6 - 4x[/tex]

[tex]x + 4x = 6 - 3[/tex]

[tex]5x = 3[/tex]

[tex]x = \frac{3}{5} [/tex]

C)

[tex] - (3x + 1) = 8[/tex]

[tex] - 3x - 1 = 8[/tex]

[tex] - 3x = 8 + 1[/tex]

[tex] - 3x = 9[/tex]

[tex]x = 9 \div ( - 3) = - 3[/tex]

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