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13=2/5x+9
We move all terms to the left:
13-(2/5x+9)=0
Domain of the equation: 5x+9)!=0We get rid of parentheses
x∈R
-2/5x-9+13=0
We multiply all the terms by the denominator
-9*5x+13*5x-2=0
Wy multiply elements
-45x+65x-2=0
We add all the numbers together, and all the variables
20x-2=0
We move all terms containing x to the left, all other terms to the right
20x=2
x=2/20
x=1/10
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