Question

семь девяток равны 100

Answer 1

(99 - 9) : 9 + (99 - 9) = 100
99 - 9 = 90
90 : 9 = 10
99 - 9 = 90
10 + 90 = 100
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999 : 9 - 99 : 9 = 100
999 : 9 = 111
99 : 9 = 11
111 - 11 = 100