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) (х+3)*2=18
х+3=18:2
х+3=9
х=9-3
х=6

2)(х-7)*4=64
х-7=64:4
х-7=16
х=16+7
х=23

3)(х-9):2=25
х-9=25*2
х-9=50
х=50+9
х=59

4)(х+5):7=8
х+5=8*7
х+5=56
х=56-5
х=51

5)(х-11)*6=84
х-11=84:6
х-11=14
х=14+11
х=25

6)(8х+3):7=5
8х+3=5*7
8х+3=35
8х=35-3
8х=32
х=32:8
х=4