Multiply 7 9 times. Not 7 x 9. Really 7 times 9. ( 7 x 7 x 7 x 7 x 7 x 7 x7 ) which is 40,353,607
9 x 7 or 7 x 9
7/8 x 8/9 = 7/9
7 x (81 ÷ 9) = 7 x 9 = 63
1 x 3 x 5 x 7 x 9 = 3 x 5 x 7 x 9 = 15 x 7 x 9 = 105 x 9 = 945
Multiply 7 9 times. Not 7 x 9. Really 7 times 9. ( 7 x 7 x 7 x 7 x 7 x 7 x7 ) which is 40,353,607
To solve x^7 = 9 take the 7th root: x = 9^(1/7) Alternatively, take logs 7*log(x) = log(9) log(x) = log(9)/7 x = 10^{log(9)/7} or use natural logs, so that x = e^{ln(9)/7}
x/7 = 9 Therefore x = 9 x 7 = 63
28 = 36 x 7/9 = 36/9 x 7 = 4 x 7
X x 9 = 63 Algebraically rearrange X = 63/9 X = 7
x/7 = 9 Therefore, x = 9 x 7 x = 63
1 x 63, 3 x 21, 7 x 9, 9 x 7, 21 x 3, 63 x 1.
There are an infinite number of equations that could have 9 and 7 as answers. Just one example (and an easy one) might be: x2 - 16x + 63 = 0 (x - 9) x (x - 7) = 0 (x - 9) = 0, x = 9 (x - 7) = 0, x = 7
-7
9 x 7 or 7 x 9
9 x 7 = 63 so the answer is 7
7/8 x 8/9 = 7/9