arifly226
arifly226 arifly226
  • 03-12-2017
  • Mathematics
contestada

20 POINTS, 2 questions ( answer with both explanations !! )

20 POINTS 2 questions answer with both explanations class=

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carlafossil320
carlafossil320 carlafossil320
  • 03-12-2017
a) 275+12d=1091
b) 275+12d=1091
-275 on both sides
12d=816
÷12 on both sides
d=68
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