k) 2x+3x+9x=8(6-x) L) 4(x+10)-2(x-5)=0 m) 3(2x+3)-4(x-1)=3 *com o calculo pfvr*.... Pergunta de ideia depaodebatata6g

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k) 2x+3x+9x=8(6-x) L) 4(x+10)-2(x-5)=0 m) 3(2x+3)-4(x-1)=3 *com o calculo pfvr*

Vamos lá.

2x+3x+9x=8(6-x)

14x = 48 - 8x

22x = 48

x = 24/11

4(x+10)-2(x-5)=0

4x + 40 - 2x + 10 = 0

2x = -50

x = -25

3(2x+3)-4(x-1)=3

6x + 9 - 4x + 4 = 3

2x = 3 - 13 = -10

x = -5