Solve for x
x=10
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18=3\left(x-4\right)
Variable x cannot be equal to 4 since division by zero is not defined. Multiply both sides of the equation by x-4.
18=3x-12
Use the distributive property to multiply 3 by x-4.
3x-12=18
Swap sides so that all variable terms are on the left hand side.
3x=18+12
Add 12 to both sides.
3x=30
Add 18 and 12 to get 30.
x=\frac{30}{3}
Divide both sides by 3.
x=10
Divide 30 by 3 to get 10.
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