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[tex] \frac{x + 29}{2} = x + 19 \\ [/tex]

Multiply sides by 2

[tex]x + 29 = 2(x + 19)[/tex]

[tex]x + 29 = 2x + 38[/tex]

[tex]2x + 38 = x + 29[/tex]

Subtract sides x

[tex] - x + 2x + 38 = - x + x + 29 \\ [/tex]

[tex]x + 38 = 29[/tex]

Subtract sides 38

[tex]x + 38 - 38 = 29 - 38[/tex]

[tex]x = - 9[/tex]

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