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6(-1/2x+9)=87
We move all terms to the left:
6(-1/2x+9)-(87)=0
Domain of the equation: 2x+9)!=0We multiply parentheses
x∈R
-6x+54-87=0
We add all the numbers together, and all the variables
-6x-33=0
We move all terms containing x to the left, all other terms to the right
-6x=33
x=33/-6
x=-5+1/2
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