Question

540:X=380:19
k×6=18000+24
3480-c=2190 :3
d+2010=3001×4

Answer 1

540:х=380:19
540:х=20
х=540:20
х=27

к*6=18000+24
к*6=18024
к=18024:6
к=3004

34800-с=2190:3
34800-с=730
с=34800-700
с=34100

d+2010=3001*4
d+2010=12004
d=12004-2010
d=9994