Question

m ajudem é pra agora plmds determine x
m)x+x-4 = 17 - 2x +1
n) x + 2x +3 -5x = 4x - 9
o) 5x + 6x - 16 = 3x + 2x - 4
p) 5x +4=3x - 2x + 4
​

Answer 1

M) $x+x-4 = 17-2x+1\\x+x+2x = 17+1+4\\4x = 22\\x = \frac{22}{4} \\x = 5,5$

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

O) $5x+6x-16 = 3x+2x-4\\5x+6x-3x-2x=16-4\\11x-5x=12\\6x=12\\x=\frac{12}{6}\\ x=2$

P) $5x+4=3x-2x+4\\5x-3x+2x=-4+4\\4x=0\\x=\frac{0}{4} \\x=0$

Answer 2

Explicação passo-a-passo:

$m) \: \: x + x - 4 = 17 - 2x + 1 \\ 2x + 2x = 17 + 4 + 1 \\ 4x = 22 \\ x = \frac{22}{4} = 5,5 \\ \\ \\ \\ n) \: \: x + 2x +3 -5x = 4x - 9 \\ 3x - 5x - 4x = - 9 - 3 \\ - 6x = - 12 \\ x = 2. \\ \\ \\ \\ o) \: \: 5x + 6x - 16 = 3x + 2x - 4 \\ 6x = 16 - 4 \\ x = 2.$

p) 5x +4=3x - 2x + 4

4x = 0

{x e R | x = 0}