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Solve for x_2
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Solve for x_4
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2x_{2}+1=-x_{4}
Subtract x_{4} from both sides. Anything subtracted from zero gives its negation.
2x_{2}=-x_{4}-1
Subtract 1 from both sides.
\frac{2x_{2}}{2}=\frac{-x_{4}-1}{2}
Divide both sides by 2.
x_{2}=\frac{-x_{4}-1}{2}
Dividing by 2 undoes the multiplication by 2.
x_{4}+1=-2x_{2}
Subtract 2x_{2} from both sides. Anything subtracted from zero gives its negation.
x_{4}=-2x_{2}-1
Subtract 1 from both sides.