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2x-13x+21=6x+x-5
We move all terms to the left:
2x-13x+21-(6x+x-5)=0
We add all the numbers together, and all the variables
2x-13x-(7x-5)+21=0
We add all the numbers together, and all the variables
-11x-(7x-5)+21=0
We get rid of parentheses
-11x-7x+5+21=0
We add all the numbers together, and all the variables
-18x+26=0
We move all terms containing x to the left, all other terms to the right
-18x=-26
x=-26/-18
x=1+4/9
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