Question

(х+2)+х=9 ПОЛНЫЙ ОТВЕТ

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Answer 1

x+2+x=9
2x+2=9
2x=9-2
2x=7
x=7:2
x=3,5

Answer 2

а проверка

Answer 3

(3,5 + 2) + 3,5= 9

Answer 4

5,5+3,5=9

Answer 5

9=9

Answer 6

(х + 2) + х = 9
х + 2 + х = 9
2х + 2 = 9
2х = 9 - 2
2х = 7
х = 7 : 2
х = 3,5
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Проверка:
3,5 + 2 + 3,5 = 9
7 + 2 = 9
9 = 9