2z+4+5z-5=90

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Solution for 2z+4+5z-5=90 equation: 



2z+4+5z-5=90

We move all terms to the left:

2z+4+5z-5-(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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