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a fost răspuns

-4x+1=-15
x=?
8x+6=-2
x=?
2x-1=-7
x=?

Răspuns :

   
[tex]\displaystyle\\ 1)\\ -4x+1=-15\\ -4x=-15-1\\ -4x = -16\\ x= \frac{-16}{-4}=4\\\\ 2)\\ 8x+6=-2\\ 8x=-2-6\\ 8x=-8\\ x= \frac{-8}{8} =-1\\\\ 3)\\ 2x-1=-7\\ 2x=-7+1\\ 2x=-6\\ x= \frac{-6}{2}=-3 [/tex]



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