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600=1/2a*400
We move all terms to the left:
600-(1/2a*400)=0
Domain of the equation: 2a*400)!=0We add all the numbers together, and all the variables
a!=0/1
a!=0
a∈R
-(+1/2a*400)+600=0
We get rid of parentheses
-1/2a*400+600=0
We multiply all the terms by the denominator
600*2a*400-1=0
Wy multiply elements
480000a*4-1=0
Wy multiply elements
1920000a-1=0
We move all terms containing a to the left, all other terms to the right
1920000a=1
a=1/1920000
a=1/1920000
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