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4.1z+15.51=-7.1-12.1z+4.3z
We move all terms to the left:
4.1z+15.51-(-7.1-12.1z+4.3z)=0
We add all the numbers together, and all the variables
4.1z-(-7.8z-7.1)+15.51=0
We get rid of parentheses
4.1z+7.8z+7.1+15.51=0
We add all the numbers together, and all the variables
11.9z+22.61=0
We move all terms containing z to the left, all other terms to the right
11.9z=-22.61
z=-22.61/11.9
z=-1+6.2631578947368/6.9590643274854
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