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7-1/5x=3
We move all terms to the left:
7-1/5x-(3)=0
Domain of the equation: 5x!=0We add all the numbers together, and all the variables
x!=0/5
x!=0
x∈R
-1/5x+4=0
We multiply all the terms by the denominator
4*5x-1=0
Wy multiply elements
20x-1=0
We move all terms containing x to the left, all other terms to the right
20x=1
x=1/20
x=1/20
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