Question

a. 3x-1=-17

b. 40-(3x-8)=3(3-5x)

c. x/2(x-2) + x/2x+2 = 2x/(x+1)(x-2) e cảm ơn mng nhìuu

Answer 1

a) 3x-1=-17

<=>3x=-16

<=>x=-16/3

Vậy...

b) 40-(3x-8)=3(3-5x)

<=>40-3x+8=9-15x

<=>12x = -39

<=> x = -13/4

Vậy ... 

c) x/2(x-2) + x/2x+2 = 2x/(x+1)(x-2)

<=> x/2(x-2) + x/2(x+1) = 2x/(x+1)(x-2)

<=> x(x+1)/2(x-2)(x+1) + x(x-2)/2(x+1)(x-2) = 4x/2(x+1)(x-2)

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

<=> x2 + x + x2 -2x = 4x

<=> 2x^2 -5x = 0

<=> x(2x-5) = 0

<=>x=0 hoặc 2x-5=0

<=>x=0     <=>x=5/2

Vậy...

(Nhớ tick mik nha)

Answer 2

a: =>3x=-16

=>x=-16/3

b: =>40-3x+8=9-15x

=>-3x+48=9-15x

=>12x=-39

=>x=-13/4

c: =>x(x+1)+x(x-2)=4x

=>x^2+x+x^2-2x-4x=0

=>2x^2-5x=0

=>x=0 hoặc x=5/2