Елька1984 (d - 389)*3=807
d - 389=807:3
d-389=269
d=269+389
d=658
(658-389)*3=807
807=807

8*(5400-s)=5536
5400-s=5536:8
5400-s=692
s=5400-692
s=4708

t:(6400-6393)=8500
t : 7=8500
t=8500*7
t=59500

(119+h):8=765
119+h=765*8
119+h=6120
h=6120-119
h=6001

гюйс

Verified answer

1) 3d-1167=807
3d=807+1167
3d=1974
d=1974:3
d=658

2)43200-8s=5536
8s=43200-5536
8s=37664
s=37664:8
s=4708

3)t:(6400-6393)=8500
t:7=8500
t=8500*7
t=59500

4) 119+h=765*8
119+h=6120
h=6120-119
h=6001