Solve for x
x\leq 6
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-1-2x\geq -13
Swap sides so that all variable terms are on the left hand side. This changes the sign direction.
-2x\geq -13+1
Add 1 to both sides.
-2x\geq -12
Add -13 and 1 to get -12.
x\leq \frac{-12}{-2}
Divide both sides by -2. Since -2 is negative, the inequality direction is changed.
x\leq 6
Divide -12 by -2 to get 6.
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