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a+1000+(a+1000)/2=2011
We move all terms to the left:
a+1000+(a+1000)/2-(2011)=0
We add all the numbers together, and all the variables
a+(a+1000)/2-1011=0
We multiply all the terms by the denominator
a*2+(a+1000)-1011*2=0
We add all the numbers together, and all the variables
a*2+(a+1000)-2022=0
Wy multiply elements
2a+(a+1000)-2022=0
We get rid of parentheses
2a+a+1000-2022=0
We add all the numbers together, and all the variables
3a-1022=0
We move all terms containing a to the left, all other terms to the right
3a=1022
a=1022/3
a=340+2/3
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