Solve for x
x=3
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12=2\left(x+3\right)
Variable x cannot be equal to -3 since division by zero is not defined. Multiply both sides of the equation by x+3.
12=2x+6
Use the distributive property to multiply 2 by x+3.
2x+6=12
Swap sides so that all variable terms are on the left hand side.
2x=12-6
Subtract 6 from both sides.
2x=6
Subtract 6 from 12 to get 6.
x=\frac{6}{2}
Divide both sides by 2.
x=3
Divide 6 by 2 to get 3.
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