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[tex] - 5 + 4 = 3 - 2(x + 4)[/tex]

[tex] \frac{2}{5} x + 4 = - 3.6x[/tex]

[tex] \frac{3(x - 1) + 2}{4} = x[/tex]
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Odpowiedź :

Magdaviz

Odpowiedź:

[tex]-5+4=3-2(x+4)\\\\-1=3-2x-8\\\\-1=-5-2x\\\\2x=-5+1\\\\2x=-4\ \ |:2\\\\x=-2\\\\\\\frac{2}{5}x+4=-3,6x\ \ |\cdot5\\\\2x+20=-18x\\\\2x+18x=-20\\\\20x=-20\ \ |:20\\\\x=-1\\\\\\\frac{3(x-1)+2}{4}=x\\\\\frac{3x-3+2}{4}=x\\\\\frac{3x-1}{4}=x\ \ |\cdot4\\\\3x-1=4x\\\\3x-4x=1\\\\-x=1\ \ |\cdot(-1)\\\\x=-1[/tex]

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