How do you solve $2x+9=2x-9$ ?

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Answer 1 · 2016-11-26T14:18:16

The null set or $x = {O/}$

First, subtract $9$ from each side of the equation:

$2x + 9 - 9 = 2x - 9 - 9$

$2x + 0 = 2x - 18$

$2x = 2x - 18$

Next, subtract $2x$ from each side:

$2x - 2x = 2x - 18 - 2x$

$0 = 0 - 18$

$0 = 18$

Because $0$ does not equal $18$ the solution to this problem is the null set or $x = O/$

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