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6.91-4.5z-10.8z=-19.64+14.2z
We move all terms to the left:
6.91-4.5z-10.8z-(-19.64+14.2z)=0
We add all the numbers together, and all the variables
-4.5z-10.8z-(14.2z-19.64)+6.91=0
We add all the numbers together, and all the variables
-15.3z-(14.2z-19.64)+6.91=0
We get rid of parentheses
-15.3z-14.2z+19.64+6.91=0
We add all the numbers together, and all the variables
-29.5z+26.55=0
We move all terms containing z to the left, all other terms to the right
-29.5z=-26.55
z=-26.55/-29.5
z=17.129032258065/19.032258064516
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