15+6x=9x+21

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Solution for 15+6x=9x+21 equation:



15+6x=9x+21
We move all terms to the left:
15+6x-(9x+21)=0
We get rid of parentheses
6x-9x-21+15=0
We add all the numbers together, and all the variables
-3x-6=0
We move all terms containing x to the left, all other terms to the right
-3x=6
x=6/-3
x=-2

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