Автор - ilabelov440

Помогите срочно по математике ​

Ответ

Автор - gulerismaylova

 frac{1}{8} x =  frac{3}{4}   :  :  : x =  frac{3}{4}  div  frac{1}{8}  :  :  : x = frac{3}{4}  times  frac{8}{1}  \ x = 6

12x - 5 = 6x + 7 \ 12x - 6x = 7 + 5 \ 6x = 12 :  :  : x = 2

4(x - 1) = 5(x - 2) \ 4x - 4 = 5x - 10 \ 4x - 5x =  - 10 + 4 \  - x =  - 6  :  :  :  :  : x = 6

6 {x}^{2}  + 8x = 0 \ 2x(3x + 4) = 0  \ 2x = 0 :  :  :  : x = 0 \ 3x + 4 = 0 \ 3x =  - 4 \ x =  -  frac{4}{3}  :  :  :  : x =  - 1 frac{1}{3}

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