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Help dkdkdkdkdkdddkd

Help dkdkdkdkdkdddkd-example-1

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5 votes

Answer:

I think it's supposed to be r=12.6 + 0.8 which then makes r= 13.4

User Neesha
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3 votes

Answer:

-0.8+r=12.6

r=12.6+0.8

r=13.4

User Mawtex
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