Solve for x
x=8
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2x+4=20
Combine x and x to get 2x.
2x=20-4
Subtract 4 from both sides.
2x=16
Subtract 4 from 20 to get 16.
x=\frac{16}{2}
Divide both sides by 2.
x=8
Divide 16 by 2 to get 8.
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