Respuesta :

dalendrk
The distributive property: a(b - c) = ab - ac

9 + 4(2x - 1) + 8 = 9 + 4·2x - 4·1 + 8 = 9 + 8x - 4 + 8 = 8x +13
JoshEast
9 + 4 (2x - 1) + 8
Expand the bracket

=>  9 + (4 * 2x) + (4 * -1) + 8
       simplify the bracket
   
      9 + 8x - 4 + 8
      make the expression equal to 0 and solve
 
       9 + 8x - 4 + 8 = 0
       9 - 4 + 8 + 8x = 0
       13 + 8x = 0
 
       8x = -13

         x = [tex] \frac{- 13}{8} [/tex]

Otras preguntas