Question

a) 5x - 3 + x= 2x + 9 b) x + 2x + 3 – 5x = 4x – 9 c) 4x - 1= 3( x – 1)

Answer 1

Explicação passo-a-passo:

a) 5x - 3 + x= 2x + 9

$5x + x - 2x = 9 - 3 \\ 6x - 2x = 12 \\ 4x = 12 \\ x = \frac{12}{4} \\ x = 3$

b) x + 2x + 3 – 5x = 4x – 9

$x + 2x - 5x - 4x = - 9 - 3 \\ 3x + 9x = 12 \\ 12x =12 \\ x = \frac{12}{12} \\ x = 1$

c)4x - 1 3( x – 1)

$4x - 1 =3x - 3 \\ 4x - 3x = - 3 + 1 \\ x = - 2$

Answer 2

Resposta:

me desculpe mas eu não sei