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/#