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-22+0.3z=3-0.5z-0.8z
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-22+0.3z=3-0.5z-0.8z

User Mmcglynn
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-25 + 0.3z = -1.3z
-25 = -1.6z
1.6z = 25
z = 15.625

Hope this helps!
User Aaron Hampton
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isolate the variables. z= 15.625
User Lokomotywa
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