daredevil1
daredevil1
15-03-2017
Mathematics
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Expand 9(5k+2)+4(7-10k)
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Аноним
Аноним
15-03-2017
9(5k+2)+4(7-10k)
= 45k + 18 + 28 - 40k
= 5k + 46
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