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5x+21=5x+2+6x-13
We move all terms to the left:
5x+21-(5x+2+6x-13)=0
We add all the numbers together, and all the variables
5x-(11x-11)+21=0
We get rid of parentheses
5x-11x+11+21=0
We add all the numbers together, and all the variables
-6x+32=0
We move all terms containing x to the left, all other terms to the right
-6x=-32
x=-32/-6
x=5+1/3
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