Question

tìm x thuộc Z , biết : 12-x = 4(2x-3) +2

Answer 1

12-x=8x-12+2

12+12-2=8x+x

22=9x

x=22/9

Answer 2

ma x thuoc z 

x ko co gia tri

Answer 3

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

12-x = 8x - 12 + 2

12-x-8x = -12 + 2

 12- (1-8)x = -10

        -7x     = 12 + 10

        -7x     = 22

           x     = \(\frac{22}{-7}\)

Answer 4

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

12 - x = 8x - 12 + 2

12 + 12 - 2 = 8x + x

22 = 9x

=> 9x = 22

=> x = 22 : 9

=> x = 22/9