7x+9+7x=51 - solution

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Solution for 7x+9+7x=51 equation:

x in (-oo:+oo)

7*x+7*x+9 = 51 // - 51

7*x+7*x-51+9 = 0

14*x-42 = 0 // + 42

14*x = 42 // : 14

x = 42/14

x = 3

x = 3

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