Solve for x
x=4
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4x-4-12=0
Use the distributive property to multiply 4 by x-1.
4x-16=0
Subtract 12 from -4 to get -16.
4x=16
Add 16 to both sides. Anything plus zero gives itself.
x=\frac{16}{4}
Divide both sides by 4.
x=4
Divide 16 by 4 to get 4.
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