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Can someone help me solve this? this is hard can someone tell me how to find the correct answer?

Can someone help me solve this? this is hard can someone tell me how to find the correct-example-1

1 Answer

2 votes

Answer:

z=11

Explanation:

(z-1)/10=(z+1)/12

cross multiple

12z-12=10z+10

2z=22

z=11

User Elayne
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