13,6у-3,64=18
13,6y=3,64+18
13,6y=21,64
y=21,64:13,6
у=1,59117647059
(3,7х-1,24)*2,5=8
раскроем скобки
9.25x-3.1 = 8
9.25x-11.1 = 0
9.25x = 11.1
x = 1.2
13,6у-3,64=18
13,6y=3,64+18
13,6y=21,64
y=21,64:13,6
у=1,59117647059
(3,7х-1,24)*2,5=8
раскроем скобки
9.25x-3.1 = 8
9.25x-11.1 = 0
9.25x = 11.1
x = 1.2