8.91+1.2z-7z=-8.5z-6.21

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Solution for 8.91+1.2z-7z=-8.5z-6.21 equation: 



8.91+1.2z-7z=-8.5z-6.21

We move all terms to the left:

8.91+1.2z-7z-(-8.5z-6.21)=0

We add all the numbers together, and all the variables

-5.8z-(-8.5z-6.21)+8.91=0

We get rid of parentheses

-5.8z+8.5z+6.21+8.91=0

We add all the numbers together, and all the variables

2.7z+15.12=0

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

2.7z=-15.12

z=-15.12/2.7

z=-5+1/1.6666666666667

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