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Anamariab20027
a fost răspuns

6 • (1,5 - 2,5x) = 22,(9) - x
x=?

Răspuns :

[tex]\displaystyle 6(1,5-2,5x)=22,(9)-x \\ 9-15x= \frac{229-22}{9} -x \\ 9-15x= \frac{207}{9} -x \\ 81-135x=207-9x \\ -135x+9x=207-81 \\ -126x=126 \\ x=- \frac{126}{126} \\ x=-1[/tex]

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