Solve for x
x=5
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12=3\left(x-1\right)
Variable x cannot be equal to 1 since division by zero is not defined. Multiply both sides of the equation by x-1.
12=3x-3
Use the distributive property to multiply 3 by x-1.
3x-3=12
Swap sides so that all variable terms are on the left hand side.
3x=12+3
Add 3 to both sides.
3x=15
Add 12 and 3 to get 15.
x=\frac{15}{3}
Divide both sides by 3.
x=5
Divide 15 by 3 to get 5.
Examples
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Limits
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