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21.34=34.874+2.565x
We move all terms to the left:
21.34-(34.874+2.565x)=0
We add all the numbers together, and all the variables
-(2.565x+34.874)+21.34=0
We get rid of parentheses
-2.565x-34.874+21.34=0
We add all the numbers together, and all the variables
-2.565x-13.534=0
We move all terms containing x to the left, all other terms to the right
-2.565x=13.534
x=13.534/-2.565
x=-5+0.709/2.565
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