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42/7x-2=0
Domain of the equation: 7x!=0We multiply all the terms by the denominator
x!=0/7
x!=0
x∈R
-2*7x+42=0
Wy multiply elements
-14x+42=0
We move all terms containing x to the left, all other terms to the right
-14x=-42
x=-42/-14
x=+3
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