35 7/9 x 45/1 = 7/1 x 5/1 by dividing both sides by 9 7/1 x 5/1 = 35/1 = 35
Suppose the answer is x.Then x + 1/2 = 7/20 so that x = 7/20 - 1/2 = 7/20 - 10/20 = -3/20
-1 x 63 1 x (-63) -3 x 21 3 x (-21) -7 x 9 7 x (-9)
7
1 x 63, 3 x 21, 7 x 9, 9 x 7, 21 x 3, 63 x 1
(7 x 9) + 20 = 63 + 20 = 83
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}
5/7 x 4/9 = 20/63Multiply across: 5 x 4 = 20, and 7 x 9 = 63 giving the answer of 20/63
1 x 63, 3 x 21, 7 x 9, 9 x 7, 21 x 3, 63 x 1.
20/x = 9 Divide each side by 20. you get 1/x = 9/20. flip both sides. you get x = 20/9
35 7/9 x 45/1 = 7/1 x 5/1 by dividing both sides by 9 7/1 x 5/1 = 35/1 = 35
1 x 63, 3 x 21, 7 x 9, 9 x 7, 21 x 3, 63 x 1
(20/5)/(20/9) is the same as (20/5)X(9/20) This can be reduced to (1/5)X(9/1) 9/5.
Suppose the answer is x.Then x + 1/2 = 7/20 so that x = 7/20 - 1/2 = 7/20 - 10/20 = -3/20
8/9 x 20 is 17 7/9
1 x 20=20 7 x 1 = 7 20/7 make sure to convert into a mixed number like this: 2 6/7. <-answer
The only common factor is: 1 20= 2 x 5 x 2 x 17 = 7 x 1The only common factor of 20 & 7 is 1