4.2z-1.8z=-12

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Solution for 4.2z-1.8z=-12 equation: 



4.2z-1.8z=-12

We move all terms to the left:

4.2z-1.8z-(-12)=0

We add all the numbers together, and all the variables

2.4z+12=0

We move all terms containing z to the left, all other terms to the right

2.4z=-12

z=-12/2.4

z=-5

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