(2z+5)+(5z-6)=90

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Solution for (2z+5)+(5z-6)=90 equation: 



(2z+5)+(5z-6)=90

We move all terms to the left:

(2z+5)+(5z-6)-(90)=0

We get rid of parentheses

2z+5z+5-6-90=0

We add all the numbers together, and all the variables

7z-91=0

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

7z=91

z=91/7

z=13

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