(3х+5х)*18=144
8х*18=144
8х=144:18
8x = 8
x = 1
(7y-3y):8=17
4y:8=17
4y = 17*8
4y = 136
y=136:4
y=34
(3х+5х)*18=144
8х*18=144
8х=144:18
8x = 8
x = 1
(7y-3y):8=17
4y:8=17
4y = 17*8
4y = 136
y=136:4
y=34