2 and a third.
a third of 21 is 7
1/3*7=2.33
7 times z reduced by a third of the product
The answer is 7.
7 is one third of 21. Then, you would have 14 left behind because 7 times 3 is 21 and 7+7+7=21.
7 x 7 x 7
There is a third book, and a fourth, and there are actually 7 in the series.
NO 7 to the third power is the same 7 x 7 x 7 = 343 777 x 3 = 2331 not the same
7 x 7 x 7 = 343
7 / (1/3) = 7*3 = 21
7/3 = 2.3333 repeating