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-12.2z-13.4z=-179.2.
We move all terms to the left:
-12.2z-13.4z-(-179.2.)=0
We add all the numbers together, and all the variables
-12.2z-13.4z-0=0
We add all the numbers together, and all the variables
-25.6z=0
z=0/-25.6
z=0
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