3z+21+4z-2=180

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Solution for 3z+21+4z-2=180 equation: 



3z+21+4z-2=180

We move all terms to the left:

3z+21+4z-2-(180)=0

We add all the numbers together, and all the variables

7z-161=0

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

7z=161

z=161/7

z=23

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