Question

x - 6 -7 = 8

Answer 1

x-6-7=8

x      =8+7+6

x       =21

Answer 2

x - 6 - 7 = 8

x - 6 = 8+ 7

x - 6 = 15

x      = 15 + 6

x      = 21

Answer 3

x - 6 - 7 = 8

x-6        = 8+7

x -6       = 15

x           = 15+6

x           = 21

Answer 4

x - 6 - 7 = 8

x            = 8 + 6 + 7

x             = 21

Vậy x = 21

Answer 5

\(x-6-7=8\)

\(x-6=8+7\)

\(x-6=15\)

\(x=15+6\)

\(x=21\)

Answer 6

21

x-6-7=8

 x=8+7+6

x=15+6

x=21