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Sujipultetu200
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Răspuns :

6-3(2-x)+4x=7-x
6-6+3x+4x=7-x
7x=7-x
7x+x=7
8x=7
x=7/8

[tex]6 - 3(2 - x) + 4x = 7 - x \\ 6 - 6 + 3x + 4x = 7 - x \\ 7x = 7 - x \\ 7x + x = 7 \\ 8x = 7 \\ = > x = \frac{7}{8} [/tex]