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stepladder [879]
3 years ago
13

I’m really confused on these problems help!!!

Mathematics
1 answer:
Ivan3 years ago
7 0

12.     -6n-20=-2n+4(1-3n)            14n.   7(5a-4)-1=14-8a

         -6n-20=-2n+4-12n                      35a-29=14-8a

         -4n=16-12n                                   43a=43

         8n=16                                             a=1

         N=2

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