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3.5z+2.7=-6
We move all terms to the left:
3.5z+2.7-(-6)=0
We add all the numbers together, and all the variables
3.5z+8.7=0
We move all terms containing z to the left, all other terms to the right
3.5z=-8.7
z=-8.7/3.5
z=-2+1/2.05882352941
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