Question

9-25=(7-x)-(25+7)

Answer 1

9-25=(7-x)-(25+7)

7-x-25-7=-16

-x-25=-16

-x=9

         Vậy x=-9

Answer 2

ta có : 9-25 = (7-x)-(25+7)

hay  -16 = 7-x -25-7

         x + 25 = 16

          x=25-16=9

vậy x=9

Answer 3

nhầm x=16-25= -9