!!!!!!!!!!!!!!!!!!!!!!!!!
2x+8+x-1=37
3x=30
x=10
209-145-x+12+96=123
-x+106=123
-x=17
x=-17
18+159-y+34=172
-y+211=172
y=211-172
y=39
64x-40x+12=132
24x=132-12
24x=120
x=5
(50000+900+7)*6=305442 (8000+600+30+3)*9=77697
1)50000 2)50900 3)50907 1)8000 2)8600 3)8630 4)8633
+ 900 + 7 * 6 + 600 + 30 + 3 * 9
50900 50907 305442 8600 8630 8633 77697
(60000+40+8)*5=300240 (90000+9000+9)*4=396036
1)60000 2)60040 3)60048 1)90000 2)99000 3)99009
+ 40 + 8 * 5 + 9000 + 9 * 4
60040 60048 300240 99000 99009 396036
1)540:(380:19)=27
2)(18000+24):6=3004
3)3480-2190:3=2750
4)3001*4-2010=9994