Question

bài 1 : tìm x

a, x+258=895-120

b, 123 - x = 789

Answer 1

a , x + 258 = 895 - 120

     x + 258 = 775

             x   = 517

b , 123 - x = 789

              x = 123 - 789

              x = - 666

Answer 2

a, x + 258 = 895 - 120

    x + 258 = 775

             x = 775 - 258

             x = 517

b, 123 - x = 789

             x = 123 - 789

              x = - 666

Answer 3

x+258=895-120

x+258=775

x=775-258

x=517

Answer 4

a, x + 258 = 895 - 120

    x + 258 = 775

    x  = 775 - 258

    x  = 517

123 - x = 789

        x = 123 - 789

        x = - 666

Answer 5

b,

123 - x = 789

        x = 123 - 789

        x =     -666

Answer 6

 Trả lời:

a , x + 258 = 895 - 120

     x + 258 = 775

             x   = 517

b , 123 - x = 789

              x = 123 - 789

              x = - 666