Question

qual a resposta da equação de 3,5x+8=2 (x+7)

Answer 1

3,5 x + 8 = 2 ( x + 7 )
3,5 x + 8 = 2 x + 14
3,5 x - 2 x = 14 - 8
1,5 x = 6
x = 6 / 1,5
x = 4

Bons estudos! 

Answer 2

$3,5x+8=2(x+7)$

$3,5x+8=2x+14$

$3,5x-2x=14-8$

$1,5x=6$

$x= \frac{6}{1,5}$

$x=4$