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(5x+3x)=8x-400
We move all terms to the left:
(5x+3x)-(8x-400)=0
We add all the numbers together, and all the variables
(+8x)-(8x-400)=0
We get rid of parentheses
8x-8x+400=0
We add all the numbers together, and all the variables
400!=0
There is no solution for this equation
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