Question

Giải phương trình 2( x + 3) + 4( 2 - 2x ) = 2( x – 2)

Answer 1

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

`=> 2x + 6 + 8 - 8x = 2x - 4`

`=> -6x + 14 = 2x - 4`

`=> -6x - 2x = -4 - 14`

`=> -4x = -18`

`=> x = 9/4`

Vậy: `S={9/4}`

Answer 2

\(2\left(x+3\right)+4\left(2-2x\right)=2\left(x-2\right)\)

=>\(2x+6+8-8x=2x-4\)

=>\(-6x+14=2x-4\)

=>-8x=-18

=>\(x=\dfrac{18}{8}=\dfrac{9}{4}\)

Answer 3

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

2x + 6 +8 - *x = 2x-4

-6x + 14 = 2x -4

-6x -2x = -4 -14

-8x = -18

x = 18/8 = 9/4