15.x-12
15x - 12
15x - 12, or 3 * (5x + 4).
12 x 15 = 180
3/5 x 5/12 x 4/15 = 3 x 5 x 4/5 x 12 x 15= 5 x (3 x 4)/5 x 12 x 15= 1/15
12 x 15 = 180 (10 x 15) + (2 x 15) = 180 15 x 2 x 6 = 180
15 x 12 = 180
180 divided by 12 is 15.
x is less than or equal to 15
1 / 12 times 1 / 15 is found by just multiplying 12 times 15. 1 / 12 x 1 / 15 = 1 / 180
15 x 3 = 45, 12 x 2 = 24, 45 + 24 = 69
x=5y-12 where x is your answer