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4+3/10x=13
We move all terms to the left:
4+3/10x-(13)=0
Domain of the equation: 10x!=0We add all the numbers together, and all the variables
x!=0/10
x!=0
x∈R
3/10x-9=0
We multiply all the terms by the denominator
-9*10x+3=0
Wy multiply elements
-90x+3=0
We move all terms containing x to the left, all other terms to the right
-90x=-3
x=-3/-90
x=1/30
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