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9/10(x+8)=-42
We move all terms to the left:
9/10(x+8)-(-42)=0
Domain of the equation: 10(x+8)!=0We add all the numbers together, and all the variables
x∈R
9/10(x+8)+42=0
We multiply all the terms by the denominator
42*10(x+8)+9=0
Wy multiply elements
420x(x+9=0
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