9=-21-10/11z

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Solution for 9=-21-10/11z equation: 



9=-21-10/11z

We move all terms to the left:

9-(-21-10/11z)=0



Domain of the equation: 11z)!=0

z!=0/1

z!=0

z∈R



We add all the numbers together, and all the variables

-(-10/11z-21)+9=0

We get rid of parentheses

10/11z+21+9=0

We multiply all the terms by the denominator


21*11z+9*11z+10=0

Wy multiply elements

231z+99z+10=0

We add all the numbers together, and all the variables

330z+10=0

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

330z=-10

z=-10/330

z=-1/33

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