Let x = the unknown number. When ten (10) is reduced (minus) by two-thirds of number (2x/3) the result is six (= 6):
10 - 2x/3 = 6
4 = 2x/3
12 = 2x
6 = x
Check:
10 - 2*6/3 = 6
10 - 12/3 = 6
10 - 4 = 6
6 = 6
Check!
Rosemary K.
asked 02/09/15
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