10(9+z)=70

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Solution for 10(9+z)=70 equation: 



10(9+z)=70

We move all terms to the left:

10(9+z)-(70)=0

We add all the numbers together, and all the variables

10(z+9)-70=0

We multiply parentheses

10z+90-70=0

We add all the numbers together, and all the variables

10z+20=0

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

10z=-20

z=-20/10

z=-2

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