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2/3x-21=9
We move all terms to the left:
2/3x-21-(9)=0
Domain of the equation: 3x!=0We add all the numbers together, and all the variables
x!=0/3
x!=0
x∈R
2/3x-30=0
We multiply all the terms by the denominator
-30*3x+2=0
Wy multiply elements
-90x+2=0
We move all terms containing x to the left, all other terms to the right
-90x=-2
x=-2/-90
x=1/45
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