Hey there!
5x - 12 = 5x + 12
SUBTRACT 5x to BOTH SIFES
5x - 12 - 5x = 5x + 12 - 5x
CANCEL outs 5x - 5x (on the LEFT side) & also CANCEL out 5x - 5x
KEEP: both -12 & 12
-12 = 12
ADD 12 to BOTH SIDES
-12 + 12 = 12 + 12
-12 + 12 = 0
12 + 12 = 24
YOU GET: 0 = 24
This means that equation has NO SOLUTIONS
Answer: NO (real) SOLUTIONS
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)