Question

Решите уравнение : 9 + x=18

Answer 1

9+x=18
x=18-9
x=9
------------
9+9=18
  18=18

Answer 2

9+х=18

Answer 3

Х==18-9

Answer 4

Х=9

Answer 5

9+х=18
9+x=18
x=9
Ответ:х=9
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