Solve for x_3
x_{3}=\frac{1}{2}=0.5
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1=2x_{3}
The absolute value of a real number a is a when a\geq 0, or -a when a<0. The absolute value of -1 is 1.
2x_{3}=1
Swap sides so that all variable terms are on the left hand side.
x_{3}=\frac{1}{2}
Divide both sides by 2.
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