Solve for x
x=12
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x+20=2\left(x+4\right)
Add 16 and 4 to get 20.
x+20=2x+8
Use the distributive property to multiply 2 by x+4.
x+20-2x=8
Subtract 2x from both sides.
-x+20=8
Combine x and -2x to get -x.
-x=8-20
Subtract 20 from both sides.
-x=-12
Subtract 20 from 8 to get -12.
x=12
Multiply both sides by -1.
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