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2/3(-x-7)=9
We move all terms to the left:
2/3(-x-7)-(9)=0
Domain of the equation: 3(-x-7)!=0We add all the numbers together, and all the variables
x∈R
2/3(-1x-7)-9=0
We multiply all the terms by the denominator
-9*3(-1x-7)+2=0
Wy multiply elements
-27x(-+2=0
We use the square of the difference formula
-27x(-2=0
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