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7/11x=21
We move all terms to the left:
7/11x-(21)=0
Domain of the equation: 11x!=0We multiply all the terms by the denominator
x!=0/11
x!=0
x∈R
-21*11x+7=0
Wy multiply elements
-231x+7=0
We move all terms containing x to the left, all other terms to the right
-231x=-7
x=-7/-231
x=1/33
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