31=-4(z-10)-17

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Solution for 31=-4(z-10)-17 equation: 



31=-4(z-10)-17

We move all terms to the left:

31-(-4(z-10)-17)=0



We calculate terms in parentheses: -(-4(z-10)-17), so:

-4(z-10)-17

We multiply parentheses

-4z+40-17

We add all the numbers together, and all the variables

-4z+23

Back to the equation:

-(-4z+23)



We get rid of parentheses

4z-23+31=0

We add all the numbers together, and all the variables

4z+8=0

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

4z=-8

z=-8/4

z=-2

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