Question

9x + 81 = 18 + 27

Answer 1

9x + 81 = 18 + 27

9x + 81 = 45

=>9x= 45-81

=>9x=-36

=>x=-36:9

x=-4

Answer 2

9x + 81 = 18 + 27

=>9x+81=45

=>9x=45-81=-36

=>x=-4

Answer 3

9x + 81 = 18 + 27

9x + 81 =   45

9x        = 45 - 81

9x        =   - 44

  x        = - 44 : 9

=> x thuộc rỗng

Answer 4

9x+81=45

9x=-36

x=-36/9

x=-4

Answer 5

9x + 81 = 18 + 27

9x + 81 = 45

9x = 45 - 81

9x = -36

x = -36 : 9

x = -4