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2/7=5/7+a
We move all terms to the left:
2/7-(5/7+a)=0
Domain of the equation: 7+a)!=0We add all the numbers together, and all the variables
We move all terms containing a to the left, all other terms to the right
a)!=-7
a!=-7/1
a!=-7
a∈R
-(+a+5/7)+2/7=0
We get rid of parentheses
-a-5/7+2/7=0
We multiply all the terms by the denominator
-a*7-5+2=0
We add all the numbers together, and all the variables
-a*7-3=0
Wy multiply elements
-7a-3=0
We move all terms containing a to the left, all other terms to the right
-7a=3
a=3/-7
a=-3/7
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