Solve for x
x=-4
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-2x-1=7
Swap sides so that all variable terms are on the left hand side.
-2x=7+1
Add 1 to both sides.
-2x=8
Add 7 and 1 to get 8.
x=\frac{8}{-2}
Divide both sides by -2.
x=-4
Divide 8 by -2 to get -4.
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