9,2х - 6,8х + 0,64 = 1
9.2x-6.8x+0.64=1 9.2x-6.8x=1-0.64 2.4x=0.36 x=0.36:2.4 x=0.15
9,2x-6,8x+0,64=1 9,2x-6,8x= 1-0,64 2,4x=0,36 x=0,36:2,4 x=0,15