Question

d) x + 2x + 3 - 5x = 4x - 9
e) 5x + 6x - 16 = 3x + 2x - 4
f) 5x + 4 = 3x - 2x + 4​

Answer 1

Olá!

Quer encontrar o valor de x ?

d)

$x+2x+ 3-5x=4x-9\\ \\ x+2x-5x-4x=-9-3\\ \\ -6x=-12~~~~~~~~~~*(-1)\\ \\ 6x=12\\ \\\\ x=\dfrac{12}{6} \\ \\\\ x=2$

e)

$5x + 6x - 16 = 3x + 2x - 4\\ \\ 5x + 6x-3x-2x=-4+16\\ \\ 6x=12\\ \\ x=\dfrac{12}{6}\\ \\ \\ x=2$

f)

$5x + 4 = 3x - 2x + 4\\\\ 5x-3x+2x=4-4\\\\ 4x=0\\\\ x=\dfrac{0}{4}\\\\\\ x=0$

:)