=14/5*1/2.5*7.2/6x+1=1.12*7.2/6x+1
6x+1=72/1.12
6x=72/1.12-1
6x=72-1.12/1.12=70.88/1.12
x=70.88/1.12*1/6=70.88/6.72
468+129 872+54<span>∩ </span>123+778 674+139 98+2
возможно так
(2,61-4z):0,03+4,6=90
(2,61-4z):0,03=90-4,6
(2,61-4z):0,03=85,4
2,61-4z=85,4*0,03
2,61-4z=2,562
-4z=2,562-2,61
-4z=-0,048
z=-0,048:(-4)
z=0,012