-20-55=7(7-6z)+2

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Solution for -20-55=7(7-6z)+2 equation: 



-20-55=7(7-6z)+2

We move all terms to the left:

-20-55-(7(7-6z)+2)=0

We add all the numbers together, and all the variables

-(7(-6z+7)+2)-20-55=0

We add all the numbers together, and all the variables

-(7(-6z+7)+2)-75=0



We calculate terms in parentheses: -(7(-6z+7)+2), so:

7(-6z+7)+2

We multiply parentheses

-42z+49+2

We add all the numbers together, and all the variables

-42z+51

Back to the equation:

-(-42z+51)



We get rid of parentheses

42z-51-75=0

We add all the numbers together, and all the variables

42z-126=0

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

42z=126

z=126/42

z=3

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