105-39=?... show work

Dont know how to show the 9 instead of 10 when borrowing
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2 Answers

105-39 = 105 - 35 -4 = 100 - 30 -4 = 70 - 4 = 66
by Level 3 User (4.4k points)

105-30=75

75-5=70

70-4=66

by Level 9 User (42.6k points)

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