3540-х=58*60 243600/х=5*8 х/307=100-80

Question

3540-х=58*60
243600/х=5*8
х/307=100-80

Answer 1

3540-х=58*60
Х=3540-3480
Х=60

243600:х=5*8
Х=243600:40
Х=6090