28/45 x 100 = 62.2 %
1. (28 = 2 x 2 x 7, 45 = 3 x 3 x 5)
5 x 5 = 25 2 x 2 x 7 = 28 3 x 3 x 5 = 45
7x+17 = 45 7x = 45-17 7x = 28 x = 4
The LCM of 45, 28, and 150 is 6,300, which is the multiple of the highest power of prime factors from all of the given numbers (22 x 32 x 52 x 7 = 2 x 2 x 3 x 3 x 5 x 5 x 7 = 6300). (Prime factors: 45 = 32 x 5; 28 = 22 x 7; 150 = 2 x 3 x 52)
(2 x 9) + (3 x 9) = 5 x 9 = 45
28/5 x 7/9 = 196/45 = 4 and 16/45
4/5 = 0.80 ...0.80 x 35 = 28
45 - 28 = 17.
28
1 x 45 = 45 2 x 45 = 90 3 x 45 = 135 4 x 45 = 180 5 x 45 = 225 6 x 45 = 270 7 x 45 = 315 8 x 45 = 360 9 x 45 = 405 10 x 45 = 450 11 x 45 = 495 12 x 45 = 540
45 and 28 have no common factor. In other words, you can't simplify that.