help115 help115
  • 23-09-2015
  • Mathematics
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8(t + 2)—3(t—4)=6(t—7)+8

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Аноним Аноним
  • 23-09-2015
8t + 2 -3t +12 =  6t - 42 +8 
 5t +2 +12     =  6t - 34
5t +14           =  6t - 34
     -14           =      - 14
5t                  =   6t - 20
-6t                 =  -6t  
-t                   = -20
t = 20

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