Question

Giúp mik, mik cảm ơn

Answer 1

\(a,6x=12\\ x=2\\ b,-2x=-14\\ x=7\\ c,5-3x-6x-7=0\\ -9x-2=0\\ -9x=2\\ x=-\dfrac{2}{9}\\ d,2x+6-4x+2+x=0\\ -x+8=0\\ -x=-8\\ x=8\\ e,2x^2+4x-3x+6=0\\ 2x^2+x+6=0=>\varnothing\\ f,-x-4x=7\\ -5x=7\\ x=-\dfrac{7}{5}\)

Answer 2

12-6x=0

6x=0+12

x=12:6

x=2

b) -2x+14=0

-2x=0-14=(-14)

x=(-14);(-2)

x=7

c) 5-3x=6x+7

-3x+5=6x+7

-3x+5-5=6x+7-5

-3x=6x+2

-3x-6x=6x+2-6x

-9=2

x=\(-\dfrac{2}{9}\)

d) 2.(x+3)=4x-(2+x)

2.x+6= 4x-x-2

2x+6=3x-2

2x+6-6=3x-2-6

2x=3x-8

2x-3x=3x-8-3x

-x=-8

\(\dfrac{-x}{-1}=\dfrac{-8}{-1}\)

x=\(\dfrac{-8}{-1}\)

x=8

các câu còn lại mình ko biết làm 

sorry bạn nha