-2x-122=-12*9⇒-2x=-12*9+122⇒-2x=14⇒x=-7
-2x-122
-2x= -12•9+122
-2x= 14
x= -7
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-2x-122=-12*9⇒-2x=-12*9+122⇒-2x=14⇒x=-7
-2x-122
-2x= -12•9+122
-2x= 14
x= -7