Question

12 + 7 x 8 = 12 + x

Answer 1

12 + 7 x 8 = 12 + x

12 + 56     = 12 + x

12 + 56      = 12 + 56

Vậy suy ra x = 56

Answer 2

12 + 7 x 8 = 12 + x

12 + 56 = 12 + x

=> bieu thuc bang nhau

=> x = 56

Answer 3

12 + 7 x 8 = 12 + x

12 + 56     = 12 + x

    68         = 12 + x

     68        = 12 + 56

=> x          = 56

Answer 4

12+7x8=12+x

=> 12+x=12+56

=> 12+x=68

=>x       =68-12

=> x=56

k nha

Answer 5

12+7.8=12+x

12+56=12+x

68=12+x

12+x=68

x=68-12

x=56