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17 August, 01:18

Which value for x makes the open sentence true?

7 + 6 • x = 42 + x2

5

4

3

2

+4
Answers (1)
  1. 17 August, 03:58
    0
    7 + 6 • x = 42 + x2=>6+6x=42+2x=>6x-2x=42-6=>4x=36=>x=9
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