Solve for z
z=W-4
Solve for W
W=z+4
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-z=4-W
Subtract W from both sides.
\frac{-z}{-1}=\frac{4-W}{-1}
Divide both sides by -1.
z=\frac{4-W}{-1}
Dividing by -1 undoes the multiplication by -1.
z=W-4
Divide 4-W by -1.
W=4+z
Add z to both sides.
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Matrix
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Limits
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