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Mathematics 17 Online
OpenStudy (anonymous):

Danny made a mistake in the following problem. The mistake was made in Line ___. Only input the number of the first incorrect line. Line 1 21 + 35 ÷ 7 + 6(2) Line 2 21 + 5 + 6(2) Line 3 21 + 11(2) Line 4 21 + 22 Line 5 43

OpenStudy (anonymous):

and why

OpenStudy (anonymous):

help

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