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01-11-2016
Mathematics

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d-21.4=87.9
Explain your answer

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Аноним Аноним

01-11-2016

D-21.4=87.9 \ solve for D

add 21.4 to both sides
D - 21.4 +21.4 =87.9 + 21.4

simplify
D = 109.3

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