kx - 2y + z = 1 x - 2ky + z = 2 x - 2y + kz = 1
{(+4)÷(-2)}×(-2)
(+44
6/5-2/11-4/15
65-/1
9+4equals*
81^3*27^8*9^8/3^51-18^12:3^23*12^8/24^9
9334 divide by 717
71/4*31/3
(((256) -½) -¼) 3