-20(10-15z)=-3(-10z-9)

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Solution for -20(10-15z)=-3(-10z-9) equation: 



-20(10-15z)=-3(-10z-9)

We move all terms to the left:

-20(10-15z)-(-3(-10z-9))=0

We add all the numbers together, and all the variables

-20(-15z+10)-(-3(-10z-9))=0

We multiply parentheses

300z-(-3(-10z-9))-200=0



We calculate terms in parentheses: -(-3(-10z-9)), so:

-3(-10z-9)

We multiply parentheses

30z+27

Back to the equation:

-(30z+27)



We get rid of parentheses

300z-30z-27-200=0

We add all the numbers together, and all the variables

270z-227=0

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

270z=227

z=227/270

z=227/270

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