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x+8=2x-4
Use the distributive property to multiply 2 by x-2.
x+8-2x=-4
Subtract 2x from both sides.
-x+8=-4
Combine x and -2x to get -x.
-x=-4-8
Subtract 8 from both sides.
-x=-12
Subtract 8 from -4 to get -12.
x=12
Multiply both sides by -1.