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x=\left(x+6\right)\times 3
Variable x cannot be equal to any of the values -6,0 since division by zero is not defined. Multiply both sides of the equation by x\left(x+6\right), the least common multiple of x+6,x.
x=3x+18
Use the distributive property to multiply x+6 by 3.
x-3x=18
Subtract 3x from both sides.
-2x=18
Combine x and -3x to get -2x.
x=\frac{18}{-2}
Divide both sides by -2.
x=-9
Divide 18 by -2 to get -9.