7+21z+8+z=5(-2+4z)

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Solution for 7+21z+8+z=5(-2+4z) equation: 



7+21z+8+z=5(-2+4z)

We move all terms to the left:

7+21z+8+z-(5(-2+4z))=0

We add all the numbers together, and all the variables

21z+z-(5(4z-2))+7+8=0

We add all the numbers together, and all the variables

22z-(5(4z-2))+15=0



We calculate terms in parentheses: -(5(4z-2)), so:

5(4z-2)

We multiply parentheses

20z-10

Back to the equation:

-(20z-10)



We get rid of parentheses

22z-20z+10+15=0

We add all the numbers together, and all the variables

2z+25=0

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

2z=-25

z=-25/2

z=-12+1/2

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