Question

tìm x:

h) 2 * x -12 - x =0

y) 2 * (x + 3 ) -12 - x = 8

 

Answer 1

h) 2 * x -12 - x =0

x = 12

y) 2 * (x + 3 ) -12 - x = 8

2x + 6 - 12 - x = 8

x = 8 + 6

x = 14

Answer 2

h)2x-x-12=0

<=>x-12=0

<=>x=12

y)2(x+3)-9-(x+3)=0

<=>3(x+3)-9=0

<=>3(x+3)=9

<=>x+3=3

<=>x=0

Chúc bạn học giỏi nha

Answer 3

h) 2 . x - 12 - x = 0

               x - 12 = 0

                 x      = 0 + 12

                  x = 12