You can put this solution on YOUR website! 2x+3 = 5x-9 Add 9 on both sides
2x+3+9 = 5x-9+9 simplify
2x+12 = 5x subtract 2x on both sides
2x-2x+12 = 5x-2x simplify
12 = 3x flip the equation so we have the x on the left side
3x = 12 divide both sides by 3
x = 4
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John