Question

540:x=380:19

x•6=18000+24

3480-2010=2190:3

x+2010=3001•4

Answer 1

1. 540:х=380:19
540:х=20
х=27

2. х*6=18000+24
х*6=18024
х=3004

3. 3480-2010=2190:3
(?)

4. х+2010=3001*4
х+2010=12004
х=9994