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0.5z+78.2=287
We move all terms to the left:
0.5z+78.2-(287)=0
We add all the numbers together, and all the variables
0.5z-208.8=0
We move all terms containing z to the left, all other terms to the right
0.5z=208.8
z=208.8/0.5
z=417+0.30000000000001/0.5
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