36•(5а+19)=30а+1134
180а+684=30а+1134
180а-30а=1134-684
150а=450
а=450:150
а=3
__________
36•(5•3+19)=30•3+1134
36•34=90+1134
1224=1224
725t-123t-292=912
602t-292=912
602t=912+292
602t=1204
t=1204:602
t=2
____________
725•2-123•2-292=912
1450-246-292=912
912=912