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

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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