135 divide 15=9 so the answer is 9 :)
15x9=135
15x9=135
9!!
x = 9
135
The factors of 135 are 1, 3, 5, 9, 15, 27, 45, and 135. The factor pairs of 135 are 1 x 135, 3 x 45, 5 x 27, and 9 x 15.
1 x 135, 3 x 45, 5 x 27, 9 x 15 = 135
9 x 15 = 135
135 = 1 x 135, 3 x 45, 5 x 27, 9 x 15, 15 x 9, 27 x 5, 45 x 3, 135 x 1.
1 x 135, 3 x 45, 5 x 27, 9 x 15, 15 x 9, 27 x 5, 45 x 3, 135 x 1
135 = 1 x 135, 3 x 45, 5 x 27, 9 x 15,
1 x 135, 3 x 45, 5 x 27, 9 x 15 = 135
1 x 135, 3 x 45, 5 x 27, 9 x 15, 15 x 9, 27 x 5, 45 x 3, 135 x 1
135
1 x 135, 3 x 45, 5 x 27, 9 x 15
The greatest common factor of 75 and 135 is 15.15 x 5 = 7515 x 9 = 135