1.(x+3)*2=18 2.(x-7)*4=64 3.(x-9)/2=25 4.(x+5)/7=8 5.(x-11)*6=84 6.(8x+3)/7=5

1) (x+3) * 2 = 18
2x (это квадрат) + 6 = 18
2x=18-6
2x=12
x=6
2) (x-7)*4=64
2x-28=64
2x=64+28
2x=92
x=46
3) (x-9)/2=25
x-9=50
x=50+9
x=59
4) (x+5)/7=8
x+5= 7*8
x+5=56
x=56-5
x=51
5) (x-11)*6=84
Сорян не знаю
6) (8x+3)/7=5
8x+3=35
8x=35-3
8x=32
x=4